Mystical Horizons, North Dakota

On the west edge of the Turtle Mountains, an anomalous mound on the US/Canada border, full of lakes, is a curious attraction called Mystical Horizons. Described as a 21^st century Stonehenge, there are equinox columns, line-of-sight tubes, and other outdoor devices made to connect the world with the cosmos. It was conceived and built by Jack Olson, an aerospace engineer, inventor, and artist, who worked for Boeing for most of his career. He is also the author of book about his early life growing up in the Turtle Mountains, called In the Middle of Nowhere.