The United States Mint in Denver mints quarters, dimes, nickels and pennies. The Mint offers free tours of its facility Monday - Thursday. The U.S. Mint in Denver is one of four mints in the country producing coins.
18 free things to do in Philly...A boon for budget travelers, Philadelphia is packed with American history. Here are all the attractions—from the United States Mint to the Liberty Bell—families can experience for free.