8. Grand Canyon National Park – USA
Grand Canyon National Park in Arizona attracts over five million visitors each year, making it one of the most popular tourist destinations in the United States. Everyone want to have witnessed firsthand the world-famous Grand Canyon and to have stood on the verge of the abyss, which is up to 1800 meters deep. The Colorado River has eaten its way through the rust-red rocks of the Colorado Plateau here over millions of years, producing a massive canyon that spans many climatic zones and is home to a diverse range of animals.