Gateway National Recreation Area
Near Atlantic Highlands, New Jersey
Gateway National Recreation Area
Governors Island National Monument
Independence National Historical Park
Near Philadelphia, Pennsylvania
Federal Hall National Memorial
African Burial Ground National Monument
Thomas Edison National Historical Park
General Grant National Memorial
Saint Paul's Church National Historic Site
Hamilton Grange National Memorial
Sagamore Hill National Historic Site
Near Oyster Bay, New York
Gateway National Recreation Area
Near Sea Bright, New Jersey
Gateway National Recreation Area
Near Highlands, New Jersey
Gateway National Recreation Area
Near New York, New York
Gateway National Recreation Area
Near New York, New York
Gateway National Recreation Area
Near New York, New York
National Park Service
Near Patchogue, New York
National Park Service
Near New York, New York
Gateway National Recreation Area
Near New York, New York
Gateway National Recreation Area
Near New York, New York
National Park Service
Near New York, New York
National Park Service
Near Philadelphia, Pennsylvania
National Park Service
Near New York, New York
National Park Service
Near New York, New York
Thomas Edison National Historical Park
Near West Orange, New Jersey
National Park Service
Near West Orange, New Jersey
National Park Service
Near New York, New York
National Park Service
Near New York, New York
National Park Service
Near Mount Vernon, New York
Steamtown National Historic Site
Eleanor Roosevelt National Historic Site
Near Hyde Park, New York
Home Of Franklin D Roosevelt National Historic Site
Near Hyde Park, New York
Vanderbilt Mansion National Historic Site
Near Hyde Park, New York
National Park Service
Near Oyster Bay, New York
Delaware Water Gap National Recreation Area
Near Blairstown, New Jersey
Delaware Water Gap National Recreation Area
Near Bushkill, Pennsylvania
Delaware Water Gap National Recreation Area
Near Bushkill, Pennsylvania
National Park Service
Near Dingmans Ferry, Pennsylvania
Fire Island National Seashore
Near Sayville, New York
Fire Island National Seashore
Near Patchogue, New York
Fire Island National Seashore
Near Patchogue, New York
Fish and Wildlife Service
Near Smyrna, Delaware
US Army Corps of Engineers
Near Bernville, Pennsylvania
Blue Marsh Lake
Near Reading, Pennsylvania
National Park Service
Near Salisbury, Maryland
Carter G. Woodson Home National Historic Site
Near Washington, District of Columbia
Frederick Douglass National Historic Site
Near Washington, District of Columbia
National Archives and Records Administration
Near Washington, District of Columbia
National Park Service
Near Scranton, Pennsylvania
The White House and President's Park
Near Washington, District of Columbia
The White House and President's Park
Near Washington, District of Columbia
National Mall and Memorial Parks
Near Washington, District of Columbia
Commander, Navy Installation Command (CNIC)
Near Patuxent River, Maryland
Commander, Navy Installation Command (CNIC)
Near Solomons, Maryland
Arlington House, The Robert E. Lee Memorial
National Park Service
Near Hyde Park, New York
National Park Service
Near Hyde Park, New York
National Park Service
Near Hyde Park, New York
Hop Brook Lake
Near Naugatuck, Connecticut
US Army Corps of Engineers
Near Naugatuck, Connecticut
Eastern Neck National Wildlife Refuge
Near Centreville, Maryland
Fish and Wildlife Service
Near Rock Hall, Maryland
US Army Corps of Engineers
Near Thomaston, Connecticut
Northfield Brook Lake
Near Thomaston, Connecticut
National Park Service
Near Baltimore, Maryland
Assateague Island National Seashore
Near Berlin, Maryland
Blackwater National Wildlife Refuge
Fish and Wildlife Service
Near Cambridge, Maryland
Blackwater National Wildlife Refuge
Near Cambridge, Maryland
Assateague Island National Seashore
Near Berlin, Maryland
Blackwater National Wildlife Refuge
Near Cambridge, Maryland
National Park Service
Near Gettysburg, Pennsylvania
Gettysburg National Military Park
Near Gettysburg, Pennsylvania
Greenbelt Park
Near Greenbelt, Maryland
Greenbelt Park
Near Greenbelt, Maryland
National Park Service
Near Greenbelt, Maryland
National Park Service
Near Washington, District of Columbia
Minute Man National Historical Park
Near Lincoln, Massachusetts
Rock Creek Park
Near Washington, District of Columbia
Adams National Historical Park
Fort Dupont Park
Near Washington, District of Columbia
National Park Service
Near Washington, District of Columbia
National Park Service
Near Washington, District of Columbia
National Park Service
Near Washington, District of Columbia
National Park Service
Near Washington, District of Columbia
National Park Service
Near Washington, District of Columbia
National Mall and Memorial Parks
Near Washington, District of Columbia
National Mall and Memorial Parks
Near Washington, District of Columbia
Catoctin Mountain Park
Near Thurmont, Maryland
Catoctin Mountain Park
Near Thurmont, Maryland
National Mall and Memorial Parks
Near Washington, District of Columbia
National Mall and Memorial Parks
Near Washington, District of Columbia
National Mall and Memorial Parks
Near Washington, District of Columbia
National Mall and Memorial Parks
Near Washington, District of Columbia
National Mall and Memorial Parks
Near Washington, District of Columbia
National Mall and Memorial Parks
Near Washington, District of Columbia
National Mall and Memorial Parks
Near Washington, District of Columbia
Naval Airstation (NAS) Patuxent River
Near Lexington Park, Maryland
National Park Service
Near Sabillasville, Maryland
Naval Airstation (NAS) Patuxent River
Near Patuxent River, Maryland