Thoreau once tramped and wrote about the area that is now Cape Cod National Seashore

Maine
Baxter State Park
The thrilling terminus to the Appalachian Trail.

Maryland
Assateague Island National Seashore
A well-rounded shore: fishing, canoeing, swimming—and wild horses.

Massachusetts
Cape Cod National Seashore
Gorgeous white sand beaches and lively wetlands.

Mount Greylock State Reservation
Views of all five of New England's great mountain ranges.

New York
Fire Island National Seashore
A surprising wilderness coast a stone's throw from the Big Apple.

Adirondacks State Park
Huge expanse of wilderness, famous for high peaks and matchless canoe routes.

Pennsylvania and New Jersey
Delaware Water Gap National Recreation Area
Nature's drama, midway between New York and Philadelphia.

West Virginia
New River Gorge National Recreation Area
A majestic gorge, cut through by wild rivers in the hills of West Virginia.