You can certainly see the majestic silhouette of Devils Tower from the surrounding highways (such as Wyoming Highway 24) without paying an entrance fee, as the tower rises 1,267 feet above the Belle Fourche River and is visible for miles. However, as of 2026, if you wish to enter the actual National Monument grounds to use the parking lots, visit the Visitor Center, or walk the popular 1.3-mile Tower Trail at the base, you must pay an entrance fee. The fee is typically $15–$25 per vehicle, though the park does participate in the "Free Entrance Days" program (usually held on 5-6 specific days a year). If you are just passing through and want a photo, there are several pull-off points on the approach roads that offer spectacular views of the monolith for free, but the up-close "spiritual" experience of the base requires a pass.