Piscataway Park grounds are open from dawn to dusk.
National Colonial Farm
Mid-March through mid-December:Tuesday through Sunday 10am-4pm.
Mid-December through mid-March: 10am-4pm on weekends only.
Visitor center open Tuesday through Sunday 10am-4pm.
The Accokeek Foundation administration office is open from 8am to 5pm, Monday through Friday. Please call 301.283.2113 for holiday or weather closing information.
Farmington Landing, Accokeek Creek/Boardwalk and Marshall Hall areas are open during daylight hours.