What do an upside-down White House, a toilet-shaped museum, and a planetarium shaped like Saturn and its rings have in common? All can be found in futurist website io9's collection of the world's most extreme buildings.
While the 2000-year-old quest to locate the submerged island of Atlantis continues to this day, plenty of cities have suffered the same fate. The futurist website io9 looks at several "once-majestic" cities now buried beneath the sea.
Using 8,000 photos taken from atop the Tokyo Tower, photographer Jeffrey Martin has assembled a 150-gigapixel panorama of the city. The best part - its interactive - meaning you can pan and zoom to an incredible level of detail.