Sycamore State Park, State park in Montgomery County, US.

Sycamore State Park is a 2,384-acre state park at 4675 N. Diamond Mill Road in Trotwood, Ohio, along Wolf Creek. It is the only state park in Montgomery County, bordered by Trotwood to the east, Brookville to the west, and Clayton to the north. The park contains woodlands, meadows, and ponds.

The land was originally home to the Adena culture, who built an earthen mound on the property. Following the Greenville Treaty in 1795, European settlement expanded into the region and fundamentally altered the use of these lands.

The park takes its name from the American sycamore trees growing along Wolf Creek and through the woodlands. The Miami and Shawnee held this area in the mid to late 1700s before the Greenville Treaty of 1795 opened it to settlers. Today visitors hike, ride horses and camp beneath these trees.

The park offers hiking trails, bridle paths, and picnic areas that allow visitors to enjoy different recreational activities. The main pathways are clearly marked, making it easy for guests to navigate the grounds and choose their preferred activities.

The earthen mound built by the Adena people remains visible on the grounds today, surviving from approximately 2500 years ago. This archaeological feature offers visitors a rare chance to witness an ancient construction technique preserved in the landscape.