Potomac, Maryland, United States

Lock 20, Potomac, MD, USA

Natural • Recreation • Entertainment

Great Falls Observation Platform, Potomac, MD, USA

Recreation

Lock 19, Potomac, MD, USA

Natural • Recreation • Entertainment

Lock 18, Potomac, MD, USA

Natural • Recreation • Entertainment

Lock 17, Potomac, MD, USA

Natural • Recreation • Entertainment

Lock 20, Potomac, MD, USA

Natural • Recreation • Entertainment

Lock 19, Potomac, MD, USA

Natural • Recreation • Entertainment

Lock 18, Potomac, MD, USA

Natural • Recreation • Entertainment

Lock 17, Potomac, MD, USA

Natural • Recreation • Entertainment

Maryland Mine, Potomac, MD, USA

Entertainment

Great Falls Snack Bar, Potomac, MD, USA

Food • Retail

Great Falls Snack Bar, Potomac, MD, USA

Food • Retail

Great Falls Tavern Visitor Center, Potomac, MD, USA

Government

Carroll Branch, Potomac, MD, USA

Limekiln Branch, Potomac, MD, USA

Engineers Garage, Potomac, MD, USA

Volunteer Shed, Potomac, MD, USA

Comfort Station, Potomac, MD, USA

Washington Aqueduct Gatehouse No. 1, Potomac, MD, USA

VFW Post 5633, Potomac, MD, USA

Cabin John Memorial, Potomac, MD, USA

Washington Aqueduct Intake, Potomac, MD, USA

Chesapeake and Ohio Canal, Potomac, MD, USA

Washington Aqueduct Dam, Potomac, MD, USA

Cool Spring Branch, Potomac, MD, USA