Purchased from the Brier Hill Iron and Coal Company, Cascade Run Ravine was one of the earliest acquisitions of the park and is said to be one of Volney Rogers’ favorite spots. It was named for the numerous “cascades” the water falls over along its route to Lake Cohasset. The ravine bottom is nearly solid rock from the Cascade Run Steel Bridge to Lake Cohasset. On the north end is a small meadow filled with flowering crab trees called Dogwood Hill Meadow.

Located on West Cohasset Drive, Cascade Run Stone Bridge was one of two bridges (the other is Axe Factory Run Bridge) built in 1913 after Lake Cohasset was drained and dredged to replace the existing wooden structures. It was constructed of coursed rock-faced sandstone. It has stone balustrades of vertical stones with the top rail of flat stones. The bridge crosses the creek on stone arch and has a voussoir (a wedge-shaped or tapered stone used to construct an arch).

One of the hidden gems of Mill Creek Park is the Cascade Gorge Natural Pool. Visitors can view the pool by taking the Cascade Gorge Trail.