This Cold War missile launch site has been abandoned for 40 years.

Cave carved out of a huge snow drift collapsed killing one and injuring five in July 2015.

This long, dark tunnel is open to hikers, but those without lights are known to get confused even on the straight path.

The second largest waterfall by volume in the U.S., Willamette Falls is outdone only by Niagara in the amount of water that is pushed northward.

Rustic natural hot springs in the deciduous rain forest.

Mysterious ancient petroglyphs carved on a glacial boulder at the tip of Bainbridge Island.

A crumbling cliffside ruin hidden in the woods.

Four abandoned towers hidden above the Douglas fir forest in Washington.

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

Former farm staffed by mental patients is now a public park.

Greenery cloaks this serene sculpture inspired by the famous Lost Gardens of Heligan.

This family mausoleum is steeped in symbolism and looks more like a fantasy location than a grave.