UT: Zion National Park
A shuttle brings visitors into Zion Canyon viewed from Angels Landing in Zion National Park, Utah, on May 5, 2015. The park contains 124,406 acres of wilderness, designated as part of the Omnibus Public Land Management Act of 2009, and it is one of the most visited in the country with over 3.2 million visitors in 2014. (Photo by: Alex Milan Tracy/Sipa USA)