24. Paul Allen: 414-Foot Yacht
The Microsoft co-founder is said to have a net worth of $17 billion, which explains how he could afford the $200 million mega yacht known as “Octopus.” The yacht is reportedly one of the largest in the world and boasts 41 guest suites. As if that wasn’t impressive enough, it also includes a pool, two helicopters, a movie theater, basketball courts, and— last but not least— a submarine.