We could see the entire city of Athens below us.
We also found the grounds from the 2004 Olympics. We got off the subway and walked right in. There were no doors or anything! It was pretty much deserted, except for a few swimmers and tennis players.
We made ourselves right at home. This is the real athletes' locker room!
We're still not sure if we were really supposed to be there. In the end, we couldn't find the spot where we entered (the place is huge!), so we had to resort to escape art.