6. Motor Yacht A – $323 million
At 390-feet long, Motor Yacht A is one of the most unusual looking yachts, but the Russian billionaire, Andrey Melnichenko, certainly likes its style. The interior of Motor Yacht A covers over 24,000 square feet — the master suite a whopping 2,583 — and houses a disco hall and six guest suites that can be converted into four large staterooms thanks to the yacht’s moving walls. It’s got a helicopter pad, three pools (one with a glass bottom that sits over the disco hall), a silver-plated staircase and a 30-foot speedboat. But, believe it or not, Motor Yacht A wasn’t quite lavish enough for the Russian billionaire, so he upgraded to something even more enormous, which you’ll discover below.