2. Great Sand Dunes National Park – Colorado

Towering dunes rising against a backdrop of snowcapped mountains might sound like an international destination, but it’s right in southern Colorado.

Great Sand Dunes National Park offers one of the most unique landscapes in the country. Entry fees are reasonable, and camping within the park is significantly cheaper than hotel stays in popular mountain towns.

Visitors can sandboard, splash in Medano Creek (seasonal), or simply hike up the dunes for a sunset view. The open, surreal setting feels adventurous and exotic—without the cost of airfare.