This historic graveyard was partially paved over to create a streetcar line.

An annual festival celebrating Colorado's most famous frozen corpse.

A dangerous narrow-gauge railroad once traced a route through this striking canyon.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

No one knows exactly how deep the world’s deepest geothermal hot spring is.

A multicolored mineral mound dribbles piping hot spring water right off the side of a highway.

Sip heritage cider with a surprising backstory at this family-owned cidery.

A hotel with a rich Wild West history of miners and bootleggers.

A riverside tiny house with books and other treasures galore.

In Spain, the ruins of a Roman military camp sit along a flooded section of a river.

38-story baroque tower reflecting Detroit's rise, fall, and possible rise again.

To truly appreciate Detroit's landmark skyscraper, you have to step inside.

This sprawling bookstore spans four floors and has more than a million books in stock.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

A monument to the egos of two railroad magnates that fell into decline along with their careers.

Built in 1981 in collaboration with Andy Warhol, this giant piece of pop art stands on the campus of Colorado State University.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

This chapel is the site of a yearly pilgrimage that originated during the Middle Ages.

A submerged village appears when dam levels drop.

These narrow stone granaries have been used to store and dry out grain for hundreds of years.

A cluster of granite granaries perched on stilts.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

A natural formation that resembles a camel resting in the New Mexico desert.

The largest island on the great salt lake is home to curious creatures and strange stories.