Some US national parks require tourists to make a reservation before visiting.
Popular destinations like Yosemite National Park and Zion National Park are on the list.
The scenic sights and outdoorsy activities attract millions to US national parks, typically open 24 hours a day, seven days a week.
Although there are 428 national park sites, there are only 63 that exclusively have "national park" in their name.
The reservations typically cost $2, excluding Shenandoah National Park, Haleakalā National Park, Zion National Park, and Acadia National Park.
Persons:
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Organizations:
Yosemite, Zion, Service, National Park Services, Shenandoah, Park
Locations:
Acadia