This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

These beautiful ruins deep in the Pennsylvania woods are thought to have been a ski lodge or a speakeasy, but no one really knows.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

An abandoned stretch of highway, deteriorating next to the operational one.

A Texas cave network is home to some of the world's most spectacular-looking and bizarrely named mineral formations.

A 24-hour vending machine restocked daily with homemade full-sized pecan pies.

On the edge of this small Washington Park, a piece of the Earth's mantle has come to the surface.

A graveyard for early settlers, sometimes called Old Pioneer Cemetery, hidden in the woods on a hillside.

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.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

The tiny church offers succor to travelers driving by, but only eight at a time.

A busy cafe better known for board games than food.

This former mining hub holds a surprising abundance of undisturbed relics from the Old West.

Tour the original street level of Port Angeles, buried underground in 1914.

This dilapidated ship carcass covered in trees is a striking sight.

The highest point in Washington state is a volcano covered in glaciers.

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

This medieval village/restaurant perpetually celebrates the year 1376.

An obscure waterfall that looks like something out of a fantasy novel.

Though strikingly beautiful, Seattle's other railway station is now largely forgotten.

This edible park is open to any and all foragers.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

Rustic natural hot springs in the deciduous rain forest.