The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

The ghostly remains of an accidental sea.

Explore 10 acres of environmental sculptures.

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

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

Gleaming self-built castle towers made from beer cans and inspired by "Vitamin Mary Jane."

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

Inspired by a music box, a small town Vietnam vet carved an entire carousel full of animals by hand.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

This statue of an obscure comic strip hero stands as a tribute to patriotic service and a cautionary tale about embracing fads.

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

The remains of the dam that unleashed a 15-foot wall of water on Denver.

A downtown park built on top of unclaimed graves.