Everybody loves money. Now you can learn the mystery behind the fascinating coin-making process via a free, self-guided tour of the United States Mint. Located in Independence Mall, this facility produces nearly one million coins every 30 minutes. Paper money is also printed here. Audio stations are set up to guide visitors through the building. On the self-guided tour, you'll be able to stop at the coining operations factory and view the coin-making through a long glass window. Other highlights include displays of important coins, the first coining press and the Key to the First Mint. Tours here tend to last approximately 45 minutes.