Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

This quirky hot springs town known to locals as "T or C" was named after a radio show.

Natural sonic phenomenon comes with a grisly legend of murder and blood.

Legends surround this jagged rock formation in the New Mexico desert.

A multi-storied adobe complex has been inhabited for more than a thousand years.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

This spectacular track has run continuously since 1882.

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

This alpine statue of Jesus in Silverton is said to protect both miners and local economies.

This hot dog-shaped diner has moved all around Colorado, but has never been to New York.

A museum dedicated to the mysterious cryptid.

Thousands of unmarked, sunken graves in a pauper's cemetery.

This notorious dive has been serving up both kinds of spirits since 1879.

Abandoned silver mine strewn with wrecked and twisted structures.

The glowing blue Nymphaeum of Emperor Tiberius.

A Christian monastery stands on what was once a holy Incan temple.

These ruined Incan mausoleum towers still bear carvings of sacred animals on their blocks.

The Incas turned this ancient Wari aqueduct into an imposing defensive gate.

Ancient Peruvian fertility temple or modern money-making hoax? Either way these monoliths still look like penises.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

An Inca spa, military outpost or maybe… both?

An abandoned Incan construction project left behind a mysterious "doorway."

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.