Eclipse
Price: £1.2 billion

This 560-foot-long yacht has two helipads, 11 guest cabins, two swimming pools, three launch boats, an aquarium, and a minisubmarine that can dive to 50 meters below the ocean surface, according to London's Daily Mail. The master bedroom and bridge have bulletproof glass, and the security system includes missile detection systems that warn of incoming rockets. The owner Roman Abramovich, a Russian billionaire who also owns Britain's Chelsea Football Club, reportedly fitted the yacht with a laser system that prevents paparazzi from taking photos. It was built by Blohm + Voss in Hamburg, Germany.