Some of the most recent designs incorporate wild twists, thousands of plants, and even unattainable features like the ability to hang off an asteroid.
Business Insider has rounded up 20 of the most outrageous-looking towers; some have been in use for years, while others will likely never see the light of day. Take a look below.
A skyscraper in Panama City has one of the tightest twists in the world.
The F&F Tower in Panama City, originally called the Revolution Tower, rotates like a helix.
This tower features one of the tightest twists in the world, turning 5.943 degrees as it rises to a height of about 760 feet. Because the building makes a distinct rotation for each floor, there are four exterior balconies on every level.
Dubai’s Burj Al Arab was designed to look like a sail so it wouldn’t cover the adjacent beach with its shadow.
The Burj Al Arab overlooks the Persian Gulf on an artificially-made island in Dubai.
It is known for its sail-like shape, which was designed to avoid covering the beach with its shadow, and a platform near the roof was added to serve as a helipad.
The hotel’s interior stands out for its luxurious design, with four swimming pools and a private beach club. One of the hotel’s restaurants is under the sea; its walls are made of thick acrylic glass to withstand the water pressure, and guests can enter it through a tunnel.
The Marina Bay Sands hotel in Singapore boasts the world’s largest infinity pool.
Singapore’s Marina Bay Sands is the most Instagrammed hotel in the world.
The five-star resort, which is 57 stories tall, is also home to the highest and longest infinity pool in the world. Marina Bay Sands is made of three columns that are linked at the top by a terrace.
Inside, guests can enjoy designer shopping malls, private movie screens, and several spa facilities.