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Rocky Mountain Arsenal: From Weapons to Wildlife

Explore Denver's wild side at the Rocky Mountain Arsenal National Wildlife Refuge, a unique urban oasis with bison, trails, and a fascinating history.

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Discover a unique urban wildlife refuge just outside Denver, where chemical weapons once were manufactured. Today, the Rocky Mountain Arsenal National Wildlife Refuge is a sanctuary for bison, eagles, deer, and more, offering a remarkable story of environmental recovery and outdoor recreation.

A brief summary to Rocky Mountain Arsenal National Wildlife Refuge

Local tips

  • Visit the Visitor Center first to learn about the refuge's history and get tips on where to spot wildlife.
  • Drive the 11-mile Wildlife Drive for the best chance to see bison, deer, and other animals. Stay in your car when viewing bison.
  • Bring binoculars and a camera to enhance your wildlife viewing experience.
  • Check the refuge's website for alerts and closures before your visit.
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Getting There

  • Driving

    From Denver, take I-70 east to the Havana Street exit. Head north on Havana Street to 56th Avenue, then proceed through the gate following signs to the refuge. Parking is available in designated lots throughout the refuge. Note that the Wildlife Drive may become one-way in the bison area. There are no entry fees or parking costs.

  • Public Transport

    While public transportation directly to the refuge is limited, you can take the train from Denver Union Station to the 61st & Pena Station. From there, a taxi or rideshare service can complete the journey to the refuge entrance. A taxi from 61st & Pena Station to the refuge will cost approximately $45-$60. Train fare from Union Station to 61st & Pena Station is around $10. Note that this option may take longer than driving.

Unlock the Best of Rocky Mountain Arsenal National Wildlife Refuge

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Discover more about Rocky Mountain Arsenal National Wildlife Refuge

The Rocky Mountain Arsenal National Wildlife Refuge, a 15,988-acre sanctuary located a mere 10 miles northeast of downtown Denver, presents a compelling narrative of transformation. Once a site for chemical weapons manufacturing during World War II, and later a facility for producing agricultural chemicals, the land suffered significant contamination. However, through extensive cleanup efforts and a far-sighted act of Congress in 1992, it was reborn as a national wildlife refuge. Today, the refuge stands as a testament to ecological resilience, providing a habitat for over 330 species of animals, including bison, deer, coyotes, bald eagles, and a host of other birds and wildlife. Visitors can explore this unique landscape via a self-guided 11-mile Wildlife Drive, offering opportunities to observe these creatures in their natural environment. Hiking trails, such as the popular Lake Mary Loop, provide further immersion into the prairie, wetland, and woodland habitats. The Visitor Center, open Wednesday through Sunday, serves as an excellent starting point, featuring interactive exhibits that delve into the site's history and showcase its diverse wildlife. The refuge is open daily from sunrise to sunset, offering a tranquil escape from the urban bustle and a chance to connect with nature. Fishing is also permitted on select days, with a catch-and-release program in place.

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