5. Fort Lauderdale Swap Shop
Location: Fort Lauderdale, Fla.
As the name suggests, Swap Shop is a flea market by day but a fourteen-screen drive-in movie theater by night. It is both the largest drive-in theater in the world and the largest daily flea market. And, it even has a circus! Originally opened in 1963 as the Thunderbird Drive-In, this space has been working ever since.