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

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

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

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

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.

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

This angular Dwarven tunnel cuts through a mountainside in Glacier National Park.

The only road through the heart of Glacier National Park.

This prison-turned-museum is a remnant of the Old West's grizzly, violent past.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The curious underground history of keeping Paris clean.

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

The largest self-built castle in the U.S., six decades in the making.