It's 185 feet below the surface of Lewis NY, and comes with "Strangelove-ian clocks that show the time in cities around the world and gun-metal gray consoles covered with analog switches and dials for you to flip and turn while making blastoff noises with your mouth." You also get 8 acres with a "waterfront view." Asking price: $750,000.
Mark Frauenfelder is the founder of Boing Boing and the editor-in-chief of MAKE and Cool Tools. Twitter: @frauenfelder. His new book is Maker Dad: Lunch Box Guitars, Antigravity Jars, and 22 Other Incredibly Cool Father-Daughter DIY Projects