Inside, there are restaurants, a five-story shopping mall, luxury hotels and condos, and a parking garage.
At a whopping $15 billion, the Abraj Al Bait features seven towers completed from 2007 to 2012. Located in Mecca, the Saudi Arabian government owns the complex.
Source: The Guardian
With a cost of $5.7 billion, it's billed as one of the world's most expensive casino properties, though it also includes a hotel, a convention center, a mall, a museum, two theaters, seven restaurants, and a skating rink.
Source: Fast Company
Here's what it looks like inside. In 2016, it started a $1.6 billion expansion, set to be finished in 2020.
Source: Bloomberg
With a price tag of $4.1 billion to construct in 2005, the 614-foot-tall Wynn resort and casino sits on the Las Vegas Strip.
Source: Bloomberg
One of the Cosmopolitan's main attractions is its giant glowing chandelier. There's also a casino, shops, restaurants, a theater, a gym and spa, and a convention space.
In 2010, a set of Las Vegas high-rises called the Cosmopolitan was built for $3.9 billion.
Source: Arquitectonica
In the elevator going up to the observation deck, there's a timelapse projection that shows what Manhattan has looked like every year since 1500.
With a price tag of $3.8 billion, One World Trade Center opened in 2012. Located in New York City, it's next to the site of the original WTC, which is now a memorial for the victims of the September 11 attacks.
Source: New York magazine
In the center of the mall, there's a manmade "river" (modeled after the famous one in Venice), where shoppers can take gondola rides.
The Venetian is a luxury hotel, mall, and casino in Macau. Built in 2005, the 738-foot resort cost $2.4 billion.
Source: The New York Times
Constructed in Dubai in 2012, the $2.17 billion Princess Tower houses shops and 763 luxury condos.
Source: World Atlas
Built in 2007, the $2.05 billion Palazzo Casino is on the Las Vegas Strip.
Source: The Las Vegas Review Journal
The skyscraper features a giant sphere painted gold, which spans its 87th through 92nd floors. The other levels contain offices, shops, and a restaurant.
Stretching 101 stories, the aptly named Taipei 101 was built in 2004. It hovers over Taiwan and cost $1.8 billion.
Source: Business Insider
The tallest building in the UK, it features residences, a hotel, restaurants, offices, a business school, shops, a clinic, and an observatory.
Source: The-Shard.com
The Seat of the European Central Bank (ECB) in Frankfurt, Germany cost $1.25 billion to construct in 2013.
Source: EU Business
Including the antennae, the tower stands 2,717 feet tall, making it the tallest building in the world. Inside, there are residential apartments, eight hotels, shops, restaurants, and offices. Here's the view from the observation deck (also the world's tallest):
The Burj Khalifa in Dubai cost approximately $1.5 billion to build. Construction lasted from 2004 to 2009.
Source: Arabian Business
The second floor features a shopping mall, bank, and mosque, designated only for women. Designed by Minnesota-based firm Ellerbe Necket, the Kingdom Centre also includes a hotel, offices, apartments, and a 184-foot skybridge.
Located in Riyadh, Saudi Arabia, the Kingdom Centre cost approximately $1 billion to build. Construction of the 990-foot skyscraper wrapped up in 2002.
At $1 billion, Antilia is the world's most expensive residential property behind Buckingham Palace. It's also designed to survive a magnitude 8 earthquake.
Source: Business Insider
In 2006, Indian business magnate Mukesh D. Ambani built the 27-floor Antilia skyscraper, which serves as his private residence.
The 1,483-foot-tall skyscrapers reportedly cost approximately $1 billion total and contain 88 floors each, made up of offices and retail stores.
Source: CNN