A large bin scale on the second floor at the gristmill at McConnells Mill State Park on display Thursday, May 18, 2023. Butler Eagle File Photo

The 19th century gristmill at McConnells Mill State Park is open from 10:30 a.m. to 3:30 p.m. through Labor Day. It began its open hours May 16.

Admission is free. Interpretive tours of the historic mill are scheduled at 1 and 2 p.m. daily or by request. Tours for groups may be scheduled by calling the Moraine State Park office at 724-368-8811 or by emailing morainesp@pa.gov.

Park at the Kildoo Picnic Area or Point Parking and hike down to the mill. Parking for people with disabilities may be available beside the mill. Visit or revisit the mill, which is within the Slippery Rock Gorge, a National Natural Landmark.