Here’s a neat mystery: There is a place in Poland called the “Crooked Forest,” where all the trees bend and curve, forming crescent shapes and some pretty pronounced S-swerves. Though they’re pretty sure it is a man-made phenomenon—created by applying restraints to pin down the trees after just seven years of growth—no one is really clear as to why some farmer needed a grove of oddly-shaped pines. The enigmatic wood was planted sometime in the 1930s, and has been growing all cockeyed ever since.

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