A once popular resort—said to be the vacation spot of gangster Al Capone—now remains abandoned in the woods of Arizona.

Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

Thousands of Mexican Free-Tailed Bats soar around an abandoned storm drain at sunset each summer.

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

A former department store turned into a quirky restaurant.

A kaleidoscope gallery and steampunk emporium named for a pioneering journalist.

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

This former coal gasification plant found a curious second life as a popular public park.

This private home is famous for appearing in the cult-classic "Twin Peaks" series.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

A fine, large-aperture telescope available for public use.

An exercise in patience and imagination, where Mother Earth turned common stuff into precious hidden treasures.

Hundreds of hopeful gold miners came here to get rich, but only two years later the small town was deserted.

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

The site of the Wellington avalanche, one of the America's worst railroad disasters.

This sanguine boulevard was named after a deadly cowboy bar fight.

Naturally carbonated water fills the mineral baths at this 19th-century California resort.

A train tunnel that was made obsolete by the dam it helped create.

Hidden inside a gift shop that doubles as a museum, this gargantuan yo-yo can only be operated by crane.