A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

A clear blue swimming hole with hidden caves, still unexplored.

A mysterious "wedding cake" castle in the middle of the urban desert.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

Concrete crosses scattered across the Arizona scrubland which were used to align spy satellites.

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

A Rocky Mountain city provides a happy ending for a pinto pony and his Brobdingnagian red chair.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

This sidewalk tribute honors Colorado's great culinary creation.

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

A seven-story 1920s mausoleum outside Denver houses thousands of remains.

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

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