Agricultural History Farm Park 
18400 Muncaster Rd.
Derwood, MD 20855
301-948-5053
https://www.montgomeryparks.org/parks-and-trails/agricultural-history-farm-park/
Farm: History, Picnic, Walk
Situated along Rock Creek in Derwood, Maryland, the Agricultural History Farm Park is a 410-acre complex with a farmhouse, barn, assorted farm buildings and an activity center.