When we were in Atlanta, we took a tour of Turner Field,where the Braves play.
It was kind of spooky that we were the only ones in the entire stadium. It felt a little "Twilight Zone"-ish.
During our tour, we were also allowed to sit in the press box, look in the locker room and go near the field and the dugout. We couldn't go ON the field or IN the dugout because of some special rules and stuff that was on the field at the time.