This sad gigantic building is the mighty Hangar One, one of the largest freestanding structures in the world. At a whopping 8 acres (32,000 square meters) it's also one of NASA's biggest buildings. It has seen better days.
Hangar One was built in the 30s as the station for the USS Macon, which was a flying aircraft carrier for the US Navy—it carried Curtiss F9C Sparrowhawk biplane fighters on its belly. The iconic structure, which is one of the strangest structures at NASA's Ames Research Center in California,
is now being renovated after several months of cleaning up all the asbestos materials that plagued the whole thing.