This sad gigantic building is the mighty Hangar One, one of the largest freestanding structures in the world. At a whooping eight acres (32,000sqm) 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 buildings of NASA's Ames Research centre in California, is now being renovated after cleaning up all the asbestos materials.
I can't wait for the renovation to be finished. Seeing it like this makes me a bit sad.
Photo by @astroivy