Buddha Command Center

The famous Daibutsu, the Great Buddha, in Kamakura, Japan. Been there for hundreds of years. You might not be able to tell just by looking at it, but the inside is hollow(and it's 10 yen [I think] to go inside). Thus, it can be theorized that it's actually a giant robot from days of yore, built to fight some long gone menace.

This brings up the question of whether or not the Lincoln Memorial is Washington's last line of defense...