North Dakota's newest landmark is Mystical Horizons, the "Stonehenge" of the prairie. Based on local engineer and designer Jack Olson's vision for a 21st-century Stonehenge, the Mystical Horizons site offers a breathtaking view overlooking the farmland west of the Turtle Mountains. The stone and cement structures are designed so that visitors can view the summer and winter solstices and the equinox. Throughout the year, site goers can enjoy the North Star Polaris Sighting Tube and the sundial.