If you consider yourself an explorer, then you probably love hiking to fascinating spots like scenic overlooks, hard-to-reach historical sites, abandoned ruins, and the like. Along a trail near Oakland, Illinois is an abandoned observatory that has been closed since 1981. Its presence is a welcome sight to see and makes this trail all the more interesting to hike and explore.

The Abandoned Observatory Trail is a 2.9-mile loop that is lightly trafficked and rated as easy. It is located within the 671-acre Walnut Point State Park.

Doug Neidholdt/AllTrails

Along the way, the trail meanders alongside the Embarrass River for a while and through the forest. You’ll also have the opportunity to view plenty of wildlife including many bird species like owls and raptors, several species of trees, and wildflowers in the warmer months.

Riley Snyder/AllTrails

Be aware that this trail may be flooded and get muddy after a storm, so please plan accordingly.

Fr3ShiE’s Folly/AllTrails

Follow the signs to the Prairie Observatory which was once part of the University of Illinois at Urbana-Champaign’s Department of Astronomy.

Mike DeCanto/AllTrails

Operational from 1969-1981, this site was chosen so close to Walnut Point State Park because it’s a dark-sky spot.

Amanda Young/AllTrails

The main telescope was housed inside the impressive dome which is 40 feet in diameter, and a smaller dome housed a camera. Inside the observatory’s main building was an apartment where astronomers working onsite would stay.

Daniel Lisella/AllTrails

If you’re an urban explorer, you may be tempted to go inside the observatory and have a look. However, it can only be viewed from the exterior, and entering is strictly forbidden.

Jay Hoeflinger/AllTrails

Would you hike to this abandoned observatory? If you have done this hike, please let us know about it and share your pictures in the comments.

Doug Neidholdt/AllTrails

Riley Snyder/AllTrails

Fr3ShiE’s Folly/AllTrails

Mike DeCanto/AllTrails

Amanda Young/AllTrails

Daniel Lisella/AllTrails

Jay Hoeflinger/AllTrails

If you are interested in more hikes to historic places, read this previous article.

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Address: Oakland, IL 61943, USA