This massive structure is apparently a US Air Force test stand and is one of the world's largest wooden structure. Military planes are parked on it and their resistance to things like lightning and EMP are…

The 131 foot tall Edison Memorial Tower marks the original site of Thomas Alva Edison's original labs in the Menlo Park section of what is now Edison Township in New Jersey, USA. The tower is topped…

Pinal Airpark was originally built in 1942 as a WW2 Army Airfield and was known as Marana Army Airfield. It later became the headquarters of all CIA air operations during the Vietnam War years. Today, the…

Home of the Seattle Mariners baseball club, the Safeco field has a retractable roof, which was open on the day of this photo. Just to the north is Qwest Field, a football stadium home to the…

This is the blimp airdock at Akron Fulton Airport, in Akron, Ohio. Completed in 1929, it was the world's largest structure without interior supports. Originally built by Goodyear, it is now owned by Lockheed Martin. Thanks:…

Possibly the world's largest tagging - Dave has written his name across a field in Bunker Hill, IL. I guess he must have been really bored one day. Update: We found Dave! It turns out that…