15 of the most expensive billionaire-owned yachts that have been spotted at the Cannes Film Festival

The 268-foot Romea, owned by Russian metal billionaire and investor Alexander Nesis, can currently be found in La Ciotat. Its estimated value is $120 million.

Also in La Ciotat is Musashi, Oracle founder Larry Ellison's 287-foot yacht, which is reportedly worth $130 million.

British billionaire Philip Green is the owner of 295-foot yacht Lionheart, which is worth an estimated $150 million and can currently be found in Monaco.

Another super-yacht with an estimated $150 million price tag is the Maltese Falcon, a 289-foot vessel owned by hedge fund success story Elena Ambrosiadou. Forbes spotted it in Cannes.

Both SuperYachtFan and GT Spirit estimate the 281-foot Aquila, which is currently in Antibes and is owned by WalMart heiress Ann Walton Kroenke, to be worth $150 million.

Indian steel and oil magnate Ravi Ruia appears to be headed for Antibes — or at least his yacht is, as spotted by Forbes. The 280-foot vessel is worth an estimated $150 million.

Also in Antibes is Madame Gu, which belongs to steel billionaire Andrei Skoch. Clocking in at an impressive 325 feet, the yacht's estimated cost goes up to $150 million.

Breaking the $150 million mark is Lady Lara, owned by metal and energy billionaire Alexander Machkevitch. The 299 foot yacht, worth an estimated $160 million, was spotted on its way to Antibes.

Also valued at an estimated $160 million, the estate of deceased Microsoft cofounder Paul Allen still lays claim to 303-foot yacht Tatoosh, which was recently spotted in Marseille.

Read more: Inside Paul Allen's $162 Million Yacht Tatoosh, Now Available For Purchase

Film magnate, producer, and studio executive David Geffen is the owner of the 454-foot Rising Sun superyacht, which is currently enjoying the sun in Cannes. The vessel cost $200 million to build, according to Club Yacht, but is now valued at $300 million, according to Yacht Harbour.

The 469-foot Sailing Yacht A is hard to miss, as anyone who spotted it on its way to Antibes has surely discovered. One of the largest private sailing yachts in the world, it's owned by a Russian billionaire named Andrey Melnichenko, and has been estimated to be worth a whopping $480 million.

Its masts are taller than Big Ben, and eight decks, a free-floating spiral staircase, a huge swimming pool, and an underwater observation pod are among its features.

Read more: A Russian billionaire's $480 million superyacht has been spotted again, this time by Conor McGregor — and he's freaking out

Saudi Crown Prince Mohammed bin Salman is the owner of the 439-foot Serena vessel, which was spotted by Forbes heading to Monaco.

Prince Mohammed reportedly dropped $500 million on the superyacht in late 2016 after spotting it while vacationing in the south of France.

It has two helipads, an indoor climbing wall, a fully equipped spa, and three swimming pools.

The owner of Chelsea F.C. (and a steel and investment billionaire), Roman Abramovich, owns the 533-foot superyacht Eclipse, which is perhaps one of the most recognizable in the world. While its initial cost was estimated around $590 million, current valuations rocket up to an incredible $1.5 billion.

Read more: An Up-Close Look At Roman Abramovich's $1 Billion Superyacht

The most expensive yacht on this list, 512-foot Dilbar is owned by Russian steel and telecoms tycoon Alisher Usmanov, according to Forbes. Its estimated cost starts at $600 million, though SuperYachtFan's estimations go up to $1 billion.