If you have some free time on your hands, and have any interest in history, the Virtual Tour of the CIA is pretty cool.
From the memorial to those that gave their live’s in service (many of them still unnamed due to the secrecy of their missions to pictures of the grounds, it’s an interesting diversion.
A large section of the Berlin Wall stands on the grounds. My parents returned from a trip to Germany during the time the wall was being removed. I still have a chunk of the wall on my mantle.
Source: Central Intelligence Agency