If luxury hotels aren't your scene, and you aren't in the market to buy an estate of your own, there's another option available: renting.

RentCafe.com put together a list of the most expensive rentals in 15 countries, ranging from a picturesque villa on the French Riviera to a streamlined luxury flat overlooking Hyde Park.

Dollar amounts listed are USD as of April 27.

15. South Africa: A sleek triplex with a pool.

Monthly Rent:$14,867

Location: Cape Town, South Africa

This three-level, three-bedroom apartment with an infinity edge pool overlooking the ocean comes fully furnished.

14. Belgium: A renovated masterpiece outside the city.

Monthly Rent:$16,113

Location: Brussels, Belgium

This five-bedroom home, originally built in 1929 by famous Belgian architect Marcel Leborgne on nearly five acres of land, was completely renovated to feature a swimming pool, home theater, and gym.

13. Spain: An ocean view villa on the coast.

Monthly Rent:$48,770

Location: Malaga, Spain

This nine-bedroom, four-floor villa features an elevator, wine cellar, sauna, gym, movie theater, spa, and two covered porches overlooking a pool with ocean views.

There's always a significant adjustment to make when transitioning from school to the workforce, with the sudden realization that no matter how smart or talented you are, you're starting at the bottom.

To help you determine what you want from your professional life and how to make the most of it, we've rounded up some of our favorite business books.

If you want to bolster your networking, leadership, and time-management skills, it's time to get reading.

Drake Baer contributed to this post.

'So Good They Can't Ignore You' by Cal Newport

Some of the most common advice you'll hear when you're starting out is that if you pursue your passion, the money will follow.

But there's a big caveat to that, argues Newport, an author and professor. For most people, he says mastery of a certain skill can lead to finding your passion, since the mastery of this skill can open new doors and allow you to progress in your career.

He's not suggesting you give up on your dreams, but ensure that you pair them with a dose of reality and make yourself valuable in the marketplace.

Buy it here >>

'The Black Swan' by Nassim Taleb

People love the illusion of certainty provided by predictions.

In "The Black Swan," investor-philosopher Taleb diagnoses the way people misguidedly lean on prediction as a way of moving through the world, and reveals how the most structured of systems are the most vulnerable to collapse — like the financial system in 2007.

It's rare to find a book that will change the way you think about the world. This is one such book.

Buy it here >>

'Lean In' by Sheryl Sandberg

Regardless of whether you agree with Sandberg's controversial theories, "Lean In" is a must-read for anyone looking to join the conversation around women and leadership.

In the book, she combines compelling research with moving personal stories to examine how women unintentionally undermine their professional progress. Moreover, she offers guidance for women and men looking to promote women's career success.

It's a work that will make readers of any gender question their assumptions about what it really takes to succeed — and be satisfied — at work.

Buy it here >>

Research has found that US employees, on average, spend about a quarter of their time at work combing through the hundreds of emails that each worker sends and receives every day.

And yet, according to career coach Barbara Pachter, plenty of professionals still don't know how to use email appropriately.

Pachter outlines modern email-etiquette rules in her book "The Essentials of Business Etiquette." We pulled out the most important ones you need to know.

Vivian Giang contributed to an earlier version of this article.

1. Include a clear, direct subject line.

Examples of a good subject line include "Meeting date changed,""Quick question about your presentation," or "Suggestions for the proposal."

"People often decide whether to open an email based on the subject line," Pachter says. "Choose one that lets readers know you are addressing their concerns or business issues."

2. Use a professional email address.

If you work for a company, you should use your company email address. But if you use a personal email account — whether you are self-employed or just like using it occasionally for work-related correspondences — you should be careful when choosing that address, Pachter says.

You should always have an email address that conveys your name so that the recipient knows exactly who is sending the email. Never use email addresses (perhaps remnants of your grade-school days) that are not appropriate for use in the workplace, such as "babygirl@..." or "beerlover@..."— no matter how much you love a cold brew.

3. Think twice before hitting "reply all."

No one wants to read emails from 20 people that have nothing to do with them. Ignoring the emails can be difficult, with many people getting notifications of new messages on their smartphones or distracting pop-up messages on their computer screens. Refrain from hitting "reply all" unless you really think everyone on the list needs to receive the email, Pachter says.

Bloomberg TV's star anchor Stephanie Ruhle and her husband, Andy Hubbard, are selling their beautiful Tribeca condo for $5.2 million. 

Ruhle is the cohost of "Market Makers" and Hubbard is currently a portfolio manager at UBS O'Connor (multi-strategy hedge fund) where he runs their structured credit strategies.

Their stunning 2,783-square-foot three-bedroom, three-and-a-half bathroom home was designed by Stephanie's award-winning architect sister, Stacey Ruhle Kliesch.

StreetEasy has the listing.

First, here's Stephanie.

When you enter through the foyer, you'll walk into this gorgeous formal living room. By the way, those ceilings are 16-feet tall.

The living room features custom cabinets and shelves as well as oversized northern-exposure windows.

Psychology research indicates that women are more like men regarding sexuality and attraction than people previously thought.

We explore some of the major similarities and differences between the sexes, and how men can use them to appear more attractive.

Look for the universal signals of flirtation.

Rutgers University anthropologist and best-selling author Helen E. Fisher says that from the depth of the Amazons to the cafés of Paris, women signal interest with a remarkably similar sequence of expressions.

As she shared at Psychology Today, it goes like this:

First the woman smiles at her admirer and lifts her eyebrows in a swift, jerky motion as she opens her eyes wide to gaze at him. Then she drops her eyelids, tilts her head down and to the side, and looks away. Frequently she also covers her face with her hands, giggling nervously as she retreats behind her palms.

This sequential flirting gesture is so distinctive that [German ethologist Irenaus] Eibl-Eibesfeldt was convinced it is innate, a human female courtship ploy that evolved eons ago to signal sexual interest.

Look for someone 'in your league.'

Men — and women — are attracted to people who are as attractive as they are.

"If you go for someone roughly equally to you in attractiveness, it avoids two things,"Nottingham Trent University psychologist Dr. Mark Sergeant tells The Telegraph.

"If they are much better-looking than you, you are worried about them going off and having affairs," he says. "If they are much less attractive, you are worried that you could do better."

Present yourself as high status.

In 1969, University of North Carolina sociologist Glen Elder found that looks and wealth tend to find one another — namely, good-looking women tended to settle down with less attractive but wealthier men. 

Since then, it's become a well-confirmed finding in the social sciences.

Most recently, a 2010 study found that men pictured with a Silver Bentley Continental GT were way more attractive than those pictures with a Red Ford Fiesta ST, and a 2014 study found that men pictured in luxury apartment were more attractive than those in a control group. 

Why the attraction to resources? Evolutionary psychologists say it's because women want a mate who can provide for them.

We asked you to vote on the hottest new power steaks in New York City. Now the results are in, and these 11 steaks made the top of the list.

Power steaks, we should note, are powerful not only because they're huge, delicious cuts of meat but also because they're served in restaurants where powerful people gather.

On this list, you'll find cuts from recently opened restaurants and established steakhouses that have revamped their menus and caught the attention of power diners. Each steak made an impression. So get out your datebook and start making reservations.

11. Dirty French — Côte de boeuf

Location:The Ludlow Hotel, 180 Ludlow St.

Percentage of the votes: 2.5%

10. The Polo Bar — New York strip (TIE)

Location: 1 East 55th St.

Percentage of the votes: 2.7%

10. Charlie Palmer — New York strip (TIE)

Location: 5 East 54th St.

Percentage of the votes: 2.7%

It's not something you're born with.

"Charisma is simply the result of learned behaviors," says Olivia Fox Cobane, author of "The Charisma Myth."

Use words that people can relate to.

In his book "Why Presidents Succeed," University of California at Davis psychologist Dean Keith Simonton argues that the most effective communicators use concrete — rather than abstract — language.

"'I feel your pain' has association,"he tells the APA Monitor, "but 'I can relate to your viewpoint' doesn't. The most charismatic presidents reached an emotional connection with people talking not to their brains but to their gut."

Express your feelings.

"Charismatic individuals express their feelings spontaneously and genuinely,"Claremont McKenna College psychologist Ronald E. Riggio says. "This allows them to affect the moods and emotions of others."

It's called emotional contagion, or "the tendency to automatically mimic and synchronize expressions."

So if you're really excited about something, other people with "catch" that excitement, too.

Talk about your potential — it's more impressive than talking about your accomplishments.

A Stanford-Harvard study recently cited on Marginal Revolution suggests that accomplishments aren't what capture people's attention — rather, it's a person's perceived potential.

"This uncertainty [that comes with potential] appears to be more cognitively engaging than reflecting on what is already known to be true,"the authors write.

2015 is the year of the selfie. Everyone from Kim Kardashian to President Obama has been known to turn the camera around and snap a shot.

However, perfecting the picture requires more than just perfect lighting. 

These apps will help you filter, highlight, soften, and transform your selfies into flattering works of photography. 

Facetune is the gold standard when it comes to selfie photo editing apps. The application functions like a pumped up version of Photoshop for your phone. You can erase blemishes, warp your waist, whiten your teeth and more, all with a few quick swipes.

Download the app here.

Forget your lip gloss before the flash went off? Perfect 356 has got you covered. The free digital makeup and photo retouching app allows you to digitally add eyeshadow, blush, lip tint, and there's a blur function to make your skin glow.

Download the app here.

Selfie Cam is the only selfie app specifically designed to be used single handedly. With a spin of the dial you can add text, stickers, and funny props to your selfie.

Download the app here.

In 1999, Bill Gates wrote a book titled “Business @ the Speed of Thought.”

In the book, Gates makes 15 bold predictions that at the time might have sounded outrageous.

But as business student Marcus Kirjonen pointed out on his blog, his forecasts turned out to be “eerily prescient.”

#1 Price comparison sites

Gates' prediction: "Automated price comparison services will be developed, allowing people to see prices across multiple websites, making it effortless to find the cheapest product for all industries."

What we see now: You can easily search for a product on Google or Amazon and get different prices of the same product. Sites like NextTag and PriceGrabber are built specifically for price comparisons.

#2 Mobile devices

Gates' prediction:"People will carry around small devices that allow them to constantly stay in touch and do electronic business from wherever they are. They will be able to check the news, see flights they have booked, get information from financial markets, and do just about anything else on these devices."

What we see now: Smartphones, and now smartwatches, do this for most people. 

#3 Instant payments and financing online, better healthcare through the web

Gates' prediction: "People will pay their bills, take care of their finances, and communicate with their doctors over the Internet."

What we see now: Tech hasn't been able to change healthcare all that much, but there are sites like ZocDoc that makes finding a doctor and scheduling easier. You can now borrow money online through sites like Lending Club, and easily make payments through sites like PayPal and Venmo.

See the most notable LSE alumni »

Join the conversation about this story »

NOW WATCH: A 13-Year-Old Made A Revolutionary Invention Out Of Legos And Now Intel Is Investing In His Company

There's a war breaking out between some of the world's biggest tech companies — and it's all about music streaming.

Rapper Jay Z acquired Swedish streaming company Aspiro, and is using his star power to make that mainstream. And Spotify, another Swedish company, offers free streaming and an impressive collection of music.

But everything could be about to change for music streaming as Apple prepares to relaunch iTunes as a streaming platform after its acquisition of Beats.

23. Deezer CEO Dr. Hans-Holger Albrecht

Deezer, founded in Paris in 2006, was one of the internet's first streaming sites. Just like Spotify, Tidal and Qobuz, it was an early European success story. But things didn't go smoothly for Deezer in its early days. It was shut down over copyright infringement allegations in 2007. But the site returned with an improved royalty model which let people buy music through iTunes that they had discovered through the service.

But there were more problems for Deezer in 2008 when it faced running out of money. It quickly turned things around by creating its own ad agency to run ads on the site and raising new funding, preventing another shutdown.

Deezer CEO Axel Dauchez exited the company in 2014, and promptly became the CEO of Publicis Worldwide in France. Now, Deezer is led by Dr. Hans-Holger Albrecht, an experienced businessman who has managed several different companies.

22. Qobuz CEO Yves Riesel

Like Tidal, Qobuz is a European streaming site which caters to audiophiles rather than casual music fans. Its big selling point is high-resolution music, which only really sound better if you have high-end audio equipment.

You might think that there's not a huge market for streaming services like Qobuz and Tidal which charge a maximum fee of £19.99 per month (double the cost of Spotify), but there's actually a dedicated network of audiophiles around the world who are prepared to pay more for their music.

21. Rdio CEO Anthony Bay

Rdio is a streaming site and social network focused around music that competes with Spotify and Tidal. The service was launched in 2010 by Skype cofounders Niklas Zennström and Janus Friis, and has grown to operate in 61 countries around the world.

Rdio launched a free streaming service in 2014, using a similar ad-supported model to rivals like Spotify. It also experimented with its own video-on-demand network named Vdio in 2013, but shut it down after several months.

When you're on a long-haul flight to Asia, you know how important it is to get some sleep.

But what if you're a member of the flight crew? Turns out that Boeing's 777 and 787 airliners have a secret stairway that leads to a tiny set of windowless bedrooms for flight attendants and pilots. After all, they also need sleep on journeys than can take 18 hours or more.

Passengers aren't allowed up there, and few people know they even exist. Here is what those upstairs bedrooms look like, via YouTube videos from Chris McGinniss at Travelskills.com and Chris Jepson and the Flickr account of Martin Deutsch.

This is Boeing's official representation of the crew rest area on a Boeing 777.

This diagram shows how the crew bedrooms are located in a tiny slot above the main cabin.

It looks pretty nice in there, judging by Boeing's official imagery.

Summer movie season officially kicks off Friday.

While you may have your tickets ready for the "Avengers" sequel, "Age of Ultron" is just the start.

More than 100 movies will be released between Friday and the end of August.

From comedies to big-budget sequels, we've rounded up this summer's biggest movies you should check out.

"The Avengers: Age of Ultron"

Release date: May 1

Why to see it: When Earth's mightiest heroes assemble, you don't need many reasons to head out to theaters. We already know you're planning to see this one. James Spader as a psychotic android uttering the "Pinocchio" theme gives us chills every time we watch this trailer. We're most excited, however, to see Paul Bettany as the mysterious android Vision.

Watch the trailer.

"Mad Max: Fury Road"

Release date: May 15

Why to see it: If you were a fan of George Miller's original 1979 film, Miller is back directing the fourth installment, starring Tom Hardy and Charlize Theron. The film has been in the works for over two decades, so anticipation is high. The newest trailer delivers with a barrage of nonstop action and gorgeous visuals that should excite fans of the series.

Watch the trailer.

"Slow West"

Release date: May 15

Why to see it: A gorgeously shot, quirky Western featuring Michael Fassbender ("12 Years a Slave") as an outlaw guiding a naive lovesick Scottish boy (Kodi Smit-McPhee) to his beloved. Fassbender narrates the tale, which our own Brett Arnold describes as occasionally violent, often funny, but always a joy.

Watch the trailer and read Arnold's review.

When it comes to college, being smart and being athletic don't have to be mutually exclusive.

We worked with college database Niche to come up with a list of schools where students are both athletic and smart. 

To create this list, Niche culled data from students at colleges around the US who rated their schools in a number of categories, including academics and athletics.

Many of the schools on the list are big, sports-driven schools — Penn State and UConn, for example — but other, smaller ones known more for their academic prestige — like Princeton and Williams College — also rank highly not just for participating in varsity sports, but also joining intramurals, going to the gym, and, of course, having team spirit.

We've included some quotes from students on Niche to show why each school made the list.

50. Kenyon College

Gambier, Ohio

"I am on the swim team, which is the most developed and competitive team on campus. It's a great experience and we have a lot of alumni support. The professors respect what we do for the most part and help us to balance the workload."

Visit Niche for more information on Kenyon College.

49. Indiana University at Bloomington

Bloomington, Indiana

"Athletics are huge at IU and are a big part of the experience at Indiana University."

"Everyone here is really good looking, but pretty smart too."

Visit Niche for more information on Indiana University at Bloomington.

48. University of Richmond

Richmond, Virginia

"A lot of students are involved in at least club or intramural sports. Some teams including Quidditch and Squash do extremely well each year. Others are more laid back and just for fun."

Visit Niche for more information on University of Richmond.

Mid-20th-century architecture is not remembered fondly anywhere in the world.

And that's especially true in former communist countries of Europe and Central Asia, where it seems like architects following a passing fad were allowed to do whatever they wanted.

The result was some bizarre and amazing-looking structures, at least a dozen of which are still standing 25 years after the fall of the Berlin Wall.

The "Monument to the Revolution" built in Croatia (then Yugoslavia) is an abstract sculpture dedicated to the people of Moslavina during World War II.

This building in Georgia originally housed the Ministry of Highways and almost looks like it has been Photoshopped. It's now occupied by the country's central bank.

The enormous UFO-like spiritual home of the Bulgarian communist party stands on a peak in Buzludzha, a mountainous part of the country.

The trust between employers and employees is broken, and it's causing companies to lose their most valuable people at dangerous rates, LinkedIn cofounder and chairman Reid Hoffman says.

In the book "The Alliance: Managing Talent in the Networked Age," Hoffman and entrepreneurs Ben Casnocha and Chris Yeh explain how employers can attract and retain the best employees through the formation of alliances.

The authors created a presentation outlining the book's main principles, which can help you create a productive culture in which everyone wins.

Today marks Prince William and Kate Middleton's fourth anniversary.

After four years together, the couple have adopted a dog, moved into their own home at Kensington Palace, and have welcomed their first child, Prince George.

Now, they're expecting their second child any day.

Though the couple shine at red carpet galas, fundraisers and tours, some of the best moments between the two are candid shots of them laughing and smiling.

Relive some of the couple's most best moments.

April 29 2011: Kate and William kiss on their wedding day.

May 24, 2011: The royals meet the Obamas at Buckingham Palace before attending a special lunch hosted by Queen Elizabeth.

(Source: People)

July 7, 2011: Kate and William show off matching cowboy get up while visiting Canada during their first joint overseas tour.

Kayak just released its list of the top 10 trending summer destinations of 2015. 

The results are based on the most-searched places, with major music events, art festivals, and sporting competitions driving demand. 

From Reykjavik, Iceland, to Hyderabad, India, here’s where everyone wants to travel this summer. 

10. MADRID, SPAIN: The streets in Madrid are filled with vibrant decorations and markets in the summertime, with festivals like the San Lorenzo and La Poloma providing an authentic taste of Spanish games, music, and dancing in August.

Learn more about the San Lorenzo and La Poloma festivals.

9. EDINBURGH, SCOTLAND: Edinburgh is a famous summer stop thanks to the Edinburgh Fringe Festival — the largest arts festival in the world — which runs for three weeks in August.

Learn more about the Edinburgh Festival Fringe festival.

8. COPENHAGEN, DENMARK: Between May and September, Copenhagen's streets come to life with cafés and festivals like the Roskilde Festival, one of Europe's largest, which takes place June 27 to July 4.

Learn more about the Roskilde Festival.

In recent years, China has become one of the most important auto markets in the world. This is why the world's car makers gathered in Shanghai to wrap up the 2014-2015 car show season. The Shanghai Auto Show offers Chinese consumers an opportunity to see the latest and greatest offerings – and the world's press has the opportunity evaluate the latest developments from China's plethora of car brands.

The 2015 Shanghai Auto Show ran from April 22-29.

Chevrolet kicked off the 2015 show in grand fashion with the debut of the FNR Concept.

The futuristic, electric, self-driving concept was designed by GM's team in Shanghai to commemorate Chevy's 10 year anniversary in China.

Chinese automakers were also out in force. Shanghai Automotive's MG brand showed off its new compact crossover, the GS.

As one of the biggest world foodie destinations, New York City certainly has no shortage of great restaurants to choose from.

To find NYC's top spots, we looked at our recent list of the best restaurants in America, which combined five noteworthy lists compiled by food critics, experts, and diners. 

We singled out the restaurants based in New York City and listed them here. You can read our complete methodology here.

11. Blue Hill

Chef: Shingoon Hong
Blue Hill

10. Bâtard

Chef: Marcus Glocker
Bâtard

9. Cosme

Chef: Enrique Olvera
Cosme