When you think of Maine, you think of fresh seafood, idyllic sunsets and endless blue water. So a desert is probably the farthest thing from your mind. But if you're around the Freeport area, this natural wonder is a must-see. Bad farming after 1797 led to soil erosion and the creation of natural desert-like conditions. Surrounded by green hills, this unlikely wonder covers nearly 50 acres and can be explored with 30-minute coach tours or on foot. Stop by the new butterfly park if it's a flying visit, or set up camp by the pine forest adjacent to the desert. Think of it as a reverse oasis: a sandy haven in waterlogged Maine.