If you're looking for somewhere natural to spend your day, take a look at these nearby areas (camping available at some sites)
Calvert County
Flag Ponds Nature park
Calvert Cliffs State Park
Jefferson Patterson Park & Museum
American Chestnut Land Trust
St. Mary's County
Point Lookout State park
St. Mary’s Lake Park
Greenwell State Park
Historic St. Mary’s City Trails
Newtowne Neck State Park
Myrtle Point Park
Elms Beach
Piney Point