Cool buildings thread
Give me buildings that you would have built if you were obscenely wealthy. I'll start:

This first one would be great as a pleasure boat. I'd travel wherever I wanted in the lap of luxury aboard my super duper fancy luxury airship. The gondola would be constructed vaguely like an elongated sailing ship, with several decks. My personal quarters would be in the rear of the ship, taking up 3 decks worth of vertical space so I could look outside through a large viewing window. I'd sit there at night with a good book to prepare for bed, or perhaps take a small group for a private meal with a view, of course served by our tireless kitchen staff. That would be pretty great.