On this day in 1908, Natural Bridges National Monument was established, becoming Utah’s first National Monument. There are 3 natural bridges within the park, all formed over thousands of years from water erosion. In 2007, Natural Bridges became the first International Dark Sky Park, a designation that recognizes that it has some of the darkest and clearest skies in the U.S. but also that it makes every effort to conserve the darkness in the park. Learn more here.