- Great Smoky Mountains National Park (Tennessee and North Carolina)
- More than 13 million visitors went to the mountains in 2023. Here, travelers can find misty peaks and waterfall-filled valleys through a highway on the mountains or by taking an 800-plus mile hiking trail stretching across both states.
- Grand Canyon National Park (Arizona)
- 4.7 million visitors went to the canyon in 2023. The canyon is a mile deep, and stretches 18 miles wide at certain points. Travelers can experience it by hiking, mule riding, or rafting in the Colorado River.
- Zion National Park (Utah)
- 5 million people visited the park in 2023. The Virgin River carves itself through the Zion Canyon to the desert below; the park exhibits rock towers, sandstone canyons, and sharp cliffs. below; the park exhibits rock towers, sandstone canyons, and sharp cliffs.