10Grand Canyon National Park (Arizona)
Arguably the most famous natural wonder in the United States, the Grand Canyon attracts millions of visitors each year. Carved by the Colorado River over millions of years, the canyon stretches 277 miles in length and plunges over a mile deep. Its sheer size and breathtaking beauty, with layers of red rock glowing in the sunset, make it a must-see destination.
Why Visit: The Grand Canyon offers incredible hiking trails, scenic viewpoints like the South Rim, and thrilling activities like white-water rafting. Whether you’re exploring by foot or from a helicopter, the canyon’s grandeur is unforgettable.
