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

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

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

A futuristic temple of light uses prisms and rainbows to create an atmosphere of peace.

Neal Cassady may still have an open tab at one of Denver’s oldest watering holes.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

A downtown park built on top of unclaimed graves.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

The highest bridge in America was built for an almost unnervingly small amount of money.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

An incredible collection of Mesoamerican art assembled by one of Mexico's great artists.

This ancient structure was built by a mysterious civilization that was largely destroyed by a volcanic eruption.

These strikingly colorful paintings were created by a mysterious Mesoamerican civilization.

A small pack of an ancient, hairless breed of dog once believed to guide souls through the underworld lives on its grounds.

This extraordinary art museum is like a secret world on the edge of Mexico City.

The "world's smallest volcano" has been used to store meals and dispose of dead bodies.

The singular ruins of a mysterious lost city.

An indigenous take on European design creates a stunning visual overload.

Mexico's astounding mummy museum with "the world's smallest mummy."

The only castle in North America to ever house European sovereigns.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

The famous artist couple lived and worked here, in two different houses connected by a bridge.

Every equinox this Maya pyramid puts on a spooky ancient light show.