There are plenty of unique things to do in the Mount Rushmore state, but this one is completely out of the ordinary. Discovered by accident, this mysterious area defies the laws of physics and will fill you with wonder. This tour is perfect for the whole family and has us feeling amazed after standing upon walls without falling! You simply must experience this strange activity for yourself, but be prepared to be thrown off balance.

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Have you visited Cosmos? What did you think? Tell us all about it in in the comments!

Looking for more out of the ordinary attractions in South Dakota? Here are seven of the strangest.

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