Visakha

Nevada's Area 51 is the world's best-known secret base. It's been featured in books, movies, and TV mostly because many people suspect the U.S. government hides UFOs inside its vast confines. (Only recently did the U.S. government finally admit Area 51 exists, although they say its purpose was spy plane testing.)

But Area 51 isn't the only such place — there are other mysterious sites that are truly secret and almost unknown, but with connections to UFOs all the same. Some I talk about in my new book, Beyond Area 51; some of these connections border on the ridiculous; others are fascinating and truly baffling. Here are the most mysterious