Tourists enter reopened Grand Canyon National Park during Memorial Day Weekend in Arizona. (Damairs Carter)
Alabama visitors watch deer and turkey foraging as the The Great Smoky Mountains reopened for visitors. (AP)
A sign in front of an information station in Mount Rainier National Park gives instructions on how to practice social distancing. (AP)
The National Park Service tested opening up parks across the nation. (AP)
This rock structure is Hickman Arch at Capitol Reef in Utah. (AP)
All parks closed in March. People needed to stay safe. But parks began to reopen in May.
Folks who visited Bryce Canyon kept the rules. Many did not at the Great Smokies park.