I read about this on Tripadvisor while looking for something to do the day after taking in a Braves game. Parking is close by and costs $5. The building is VERY secure and you'll need to show a driver's license and get badged. The museum is small enough and has enough displays and demonstrations that the kids won't be bored. If they do, take them to the back part of the exhibit where they can see a sheets of bills including actual $100,000 bills, lift an actual bar of gold, and then see pallet loads of cash being moved by robots. VERY COOL! In the reception area, don't forget to get your free bag of cash. The bills which are pulled from circulation because they're damaged are shredded and handed out as a cool take home.