Murfreesboro, Arkansas: Crater of Diamonds State Park

The only place on the North American continent where you can dig for diamonds for a small fee and keep what you find. Some of the more notable diamonds found include: the 40.23-carat "Uncle Sam"--the largest diamond ever unearthed in the United States. Only diamond-producing site in the world open to the public, stands out as a unique geological "gem" for you to explore and enjoy.

The Arkansas State Parks Department wants $4 million to turn Crater of Diamonds State Park in Murfreesboro -- the only place in America where you can hunt for diamonds -- into what they consider a "national tourist attraction." What, exactly, they mean is unclear, since C of D has been a national attraction since 1986, when Roadside America brought it to national attention. We suspect it has something to do with the larger visitors center and "water play area for children" that they want to build, although why you'd want your kids splashing in water when they could be out hunting for diamonds is beyond us.