Visitors to national parks will get free admission on April 20 as the federal government waives entrance fees to commemorate the start of National Park Week.
National Park Week runs for nine days, from April 20 to April 28.
The National Park Service oversees 429 park sites in the U.S. Of them, 63 are national parks.
The remainder are national monuments, national battlefields and national historic sites, for example.
However, 108 parks don't — including some of the most popular, like Grand Canyon, Zion, Rocky Mountain, Acadia, Yosemite, Yellowstone, Joshua Tree and Glacier national parks.
Persons:
Joshua Tree
Organizations:
National, National Park Service, Finance, globetrotting
Locations:
U.S, Zion, Rocky Mountain, Acadia, Yosemite, Yellowstone