Only known mainland rookery of the threatened Stellar sea lion.

The first North American landing spot for James Cook on his third voyage of discovery in the Pacific.

The largest wooden building in the world now houses a fascinating collection of aircraft.

A massive sea stack famous for its appearance in The Goonies.

This gorgeous beach hides behind two headlands in Oregon's Ecola State Park.

A Roman-style column in Oregon hides a spiral staircase inside.

This large Sitka spruce that appears to be floating in mid-air, has defied logic for years.

Shoreline strewn with the remains of ghostly fallen trees.

A surreal landscape where fanged rocks rise from the ground and the ocean feels like a great mystery.

A glimpse into the "Logging Capital of the World" at a time when there was far more forest and far less machinery.

At the most northwestern point of the contiguous United States lies a trail leading through an ancient forest to stunning cliff-side vistas and massive oceanside caves.

City Council meetings still happen in this historic building, impeccably preserved on the inside.

Quirky movable sculptures have been racing through the town since 1983.

An abandoned network of military bunkers and tunnels open for anyone willing to descend into the darkness.

The longest spit in the United States ends at a lighthouse in the Strait of Juan de Fuca.

Bonsai trees that are up to a thousand years old.

This famous bridge twisted itself into oblivion, but not for the reason you might think.

A beautiful footbridge with over 2,000 glass sculptures along the walls and ceiling.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

The romance of early commercial flight still fills this Art Deco destination.

The remains of a historic plantation nestled in between a parking lot and the rental car return at Reagan National Airport.

An extensive, if one-sided, history of U.S. law enforcement's war on drugs.

Rumor has it the hot dog stand was targeted by two Russian nuclear missiles.

The Pentagon is so large that it was planned like a city, complete with internal highway infrastructure.