Arguably Colorado's most unique roadside attraction, the UFO Watchtower invites extraterrestrial seekers and curious minds alike to the watchtower for a chance to spot an alien or UFO for themselves. Allegedly, this location has hosted numerous UFO sightings over the years, which could in part be possible thanks to Alamosa's vast and unfiltered view of the night's sky. The Great Sand Dunes National Park are right around the corner, which have been designated as an International Dark Sky Park, because of the areas exceptional stargazing vantage point.