Region
United States
16
Colorado
5
New Mexico
5
Barataria Preserve (La.)
4
Louisiana
4
Massachusetts
4
Arizona
3
Grand Teton National Park (Wyo.)
3
Ice Age Floods National Geologic Trail
3
Maine
3
Northwest, Pacific
3
Ojito Wilderness (N.M.)
3
Tennessee
3
Wyoming
3
Acadia National Park (Me.)
2
California
2
Connecticut
2
Eightmile River Wild and Scenic River (Conn.)
2
Florida
2
Franklin National Battlefield (Tenn.)
2
Hopewell Culture National Historical Park (Ohio)
2
New Jersey
2
Ohio
2
Paterson Great Falls National Historical Park (N.J.)
2
Thomas Edison National Historic Park (West Orange, N.J.)
2
Washington (State)
2
Alabama
1
Arizona Trail (Ariz.)
1
Atlantic Coast
1
Baca National Wildlife Refuge (Colo.)
1
Bleeding Kansas and the Enduring Struggle for Freedom National Heritage Area (Kan.)
1
Boston Harbor Islands National Recreation Area (Mass.)
1
Cache La Poudre River National Water Heritage Area (Colo.)
1
Catoctin Mountain Park (Md.)
1
Channel Islands National Park (Calif.)
1
Cumberland Island Wilderness (Ga.)
1
Delaware
1
Everglades National Park (Fla.)
1
French Colonial Heritage National Historic Site (Mo.)
1
Georgia
1
Great Sand Dunes National Park and Preserve (Colo.)
1
Idaho
1
Idaho Panhandle National Forests Region (Idaho)
1
Kansas
1
Las Cienegas National Conservation Area (Ariz.)
1
Lewis and Clark National Historical Park (Or. and Wash.)
1
Little River Canyon National Preserve (Ala.)
1
Lowell National Historical Park (Lowell, Mass.)
1
Maryland
1
Michigan
1
more ...