Mallows Bay – Potomac River National Marine Sanctuary

Nature area · Charles County, MD

Easy · 2 of 5Light, playful, good for all ages.

All agesOutdoor

Directions Website Add to a plan

Good to know

Address: Charles County, MD
Area: Charles County, Maryland
Maps: Apple Maps · OpenStreetMap

More nearby

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Chiles HomesiteHistoric site · Charles CountyChillAll agesOutdoor2.0 mi
Nanjemoy Natural Resources Management Area Purse AreaNature area · NanjemoyEasyAll agesOutdoor2.2 mi
Nanjemoy Natural Resources Management Area Douglas Point AreaNature area · Charles CountyEasyAll agesOutdoor2.3 mi
Nanjemoy Natural Resources Management Area Liverpool Point AreaNature area · Charles CountyEasyAll agesOutdoor2.3 mi

Source and freshness

Place details come from OpenStreetMap (relation/10514363), © OpenStreetMap contributors, under the Open Database License (ODbL) 1.0.
Last checked against the source on Nov 13, 2026.
The adrenaline level and audience are our editorial rating for this type of activity, not a measurement. Confirm hours, prices and age limits with the venue before you go.
Spotted a mistake? Fix it on OpenStreetMap and it will flow here on the next refresh.

Cite this page: ActivityPlaces, “Mallows Bay – Potomac River National Marine Sanctuary, Charles County, MD”, https://www.activityplaces.com/place/mallows-bay-potomac-river-national-marine-sanctuary-charles-county-md (data checked Nov 13, 2026).