Spend the night in this former asylum for the incurably insane, which claims to be one of the most haunted places in the United States.

In Tulsa's Oil Capital historic district, even the bus station is "fauxback" Art Deco.

Venture into the past with an unlisted exhibit hall featuring extinct birds.

An unsuspecting brick building outside Orlando houses decades of train ephemera.

Some North Carolina Cherokee have been keeping their history alive for decades with a single play.

The remnants of a luxurious resort that saw its peak in the 1970s and 1980s has been abandoned since 2009, leaving behind the wreckage of both the hotel and a beautiful ice skating rink.

Inspired by a piece of concrete, these three pyramid-shaped buildings have been beloved Indianapolis landmarks for over 50 years.

The remnants of an early American attempt at missile defense.

These sprawling mines once served as a source of plaster and today serve as a storage facility.

This observatory comes complete with three separate telescopes and a dedicated community of amateur and expert astronomers.

One lonely, modern pyramid has gone from corporate think tank to deserted boondoggle.

This 16-foot-diameter wooden coin has been standing in Iowa City since 2006.

How did the 110-foot limestone statue cross the road?

The oldest university museum west of the Mississippi retains its 19th century feel.

A mysteriously dark cemetery monument fuels stories and legends galore.

A place of great reverence for Trekkies everywhere, a hero's future birthplace.

An overlooked monument to the celebrity gangster who helped put the sin in Sin City.

A homage to the King at the hotel where he revived his career.

A luxurious doomsday bunker hidden beneath an unassuming Las Vegas home offers the best of subterranean suburbia.

The only thing still moving in this town is the eponymous hot spring.

The ruins of an open-air theater built on this Georgia island in the 1970s.

An abandoned guano-mining city in the South Pacific.

This historic hotel has hosted the likes of Babe Ruth, Jimmy Carter, and the Vanderbilts.

The world's largest fully steerable radio telescope.