2. Black Canyon of the Gunnison National Park
Another of Travel + Leisure’s favorite U.S. national parks is Colorado’s Black Canyon of the Gunnison. At this park, you’ll be able to see the Gunnison River thundering down the steepest mountain descent of any river in the United States and through one of the country’s deepest canyons. The park features some spectacular camping sites, and it offers great rafting opportunities for adventurous travelers.