Moran Yacht & Ship/ Palmer Johnson
With the World's "ice operating" capability, the mega-yacht will be able to operate in just about any environment, including the Arctic and Antarctica, while coddling its occupants in supreme luxury. Currently under construction in Norway, the World has room for 12 guests and a crew of 27.
The yacht's broker, Moran Yacht & Ship, has not listed an official price, but CNN reported the price to be around the $150 million mark a couple of years ago.