Every year, more than 500,000 people visit this national park along the U.S.-Mexico border to spend some time outdoors. Big Bend National Park features hundreds of miles of paved and dirt roads for scenic drives, as well as 150-plus miles of hiking trails. While exploring the park’s sections of the Chihuahuan Desert, the Chisos Mountains and the Rio Grande, keep your eyes peeled for more than 450 bird species, including several kinds of woodpeckers, thrashers and sparrows. At night, camp (or glamp) under the moonlight to see why Big Bend is one of the best dark sky parks in the country.