Walmart heiress Ann Walton Kroenke owns the Aquila, which is estimated to be worth $150 million.
The 281-foot yacht was spotted in Antibes in during the Cannes Film Festival in May, Business Insider previously reported.
The estate of Microsoft cofounder Paul Allen once owned a 414-foot yacht dubbed the Octopus. It's valued at $200 million.
The yacht has 41 suites and cost a whopping $200 million to build, Business Insider previously reported. The Octopus comes with a pool, two helicopters, and a movie theater. If that's not enough, there's also a basketball court and recording studio.
Business Insider also reported that the yacht was spotted at the Cannes Film Festival in May.
The Al Mirqab, a $250 million luxury yacht that can accommodate 24 people, was built for Qatar's former Prime Minister, Hamad bin Jassim bin Jaber Al Thani.
The yacht won the Motor Yacht of the Year award in 2009. It has two VIP suites that each come with a bathroom, living room, and double bedroom, according to Superyachts.com.
The Dilbar, the world's largest yacht by gross tonnage, was built for Russian billionaire Alisher Usmanov for $256 million.
The yacht weighs 15,917 tons (over 31 million pounds), Business Insider previously reported. The Dilbar has two helipads, an indoor swimming pool, and 3,800 square meters of living space.
The $300 million Al Said yacht was built for the Sultan of Oman in 2008.
It is 509 feet long, making it one of the biggest megayachts on this list, according to The Guardian. There's not much information about the Al Said's different amenities. It does, however, have a concert hall that can fit a 50-piece orchestra.
The gigantic $400 million Dubai yacht measures 532 feet and is currently owned by Sheikh Mohammed bin Rashid Al Maktoum, the Vice President and Prime Minister of the UAE and Emir, or ruler, of Dubai.
The superyacht features a mosaic swimming pool, circular staircase, and helipad, The Guardian previously reported. It can fit 24 guests overnight.
Russian tycoon Andrey Melnichenko owns Motor Yacht A, which is worth $400 million.
The yacht has seven luxurious cabins that sleep 14 guests, Business Insider previously reported. It also has three swimming pools, one of which has a glass floor.
The Serene Yacht was purchased for 500 million euros (roughly $560 million) in 2015 by Mohammed bin Salman, the crown prince of Saudi Arabia.
The Serene is the largest yacht to have ever launched into Italian waters, according to The New York Times.
David Geffen, a billionaire entertainment mogul, has owned the $590 million Rising Sun since 2010.
Geffen originally shared the yacht with Oracle founder Larry Ellison, Business Insider previously reported. The 454-foot superyacht comes with a basketball court and can fit 18 guests. In April 2017, Geffen hosted the Obamas on the megayacht.
The owner of the $600 million Azzam yacht is unclear, but many speculate it is owned by the royal family of Abu Dhabi.
The yacht is also rumored to have its own submarine with a missile defense system, Business Insider previously reported.
At 590 feet long, the Azzam has long held the title of the largest superyacht in the world.
The $1.9 billion Eclipse yacht was delivered to Russian billionaire Roman Abramovich in 2010.
The yacht comes with two helicopter pads, 24 guest cabins, a disco hall, two swimming pools, and several hot tubs, according to The Daily Mail.