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Entry to Colorado national parks, monuments is free on Tuesday. Here’s what you need to know.

Aug. 25 marks the 110th anniversary of the National Park Service, which means free entry to local landmarks

Visitors at the Forest Canyon Overlook off Trail Ridge Road in Rocky Mountain National Park, in Colorado, on Sept. 21, 2023. (Stephen Speranza/The New York Times)
Visitors at the Forest Canyon Overlook off Trail Ridge Road in Rocky Mountain National Park, in Colorado, on Sept. 21, 2023. (Stephen Speranza/The New York Times)
Staff portrait of Tiney Ricciardi on May 28, 2026, in Denver. (Photo by RJ Sangosti/The Denver Post)
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Entry to Colorado’s national parks and monuments will be free on Tuesday to celebrate the .

Originally created on Aug. 25, 1916, the National Park Service’s purpose is to “preserve unimpaired the natural and cultural resources and values of the National Park System for the enjoyment, education, and inspiration of this and future generations.”

Colorado is home to four national parks — Rocky Mountain, Mesa Verde, Great Sand Dunes and Black Canyon of the Gunnison — and that are overseen by the National Park Service. All of those will be accessible for free this week. (If you want to visit Rocky Mountain National Park, however, you still need a timed reservation.)

The National Park Service’s birthday celebration is part of a bigger , which includes themed days through Sunday, such as Watch Wildlife Wednesday and Freedom Friday.

Can’t make it this week? Entry to these sites will also be free on Sept. 17 in honor of Constitution Day, Oct. 27 in honor of Theodore Rooseveltap birthday, and Nov. 11 for Veteran’s Day.

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