When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.

Only a few signs remain of the buried Colorado mining town that supplied the uranium for the first atomic bomb.

Inside this shop, visitors are treated to a unique blend of natural history and art.

This drive-by, rotating mini-gallery is nestled in the suburbs of Colorado.

A beautiful combination of living flora with preserved bones covers the shelves of this shop.

This nearly abandoned town was once a thriving mining community until a series of fires.

The final resting spot of the Colorado Transportation Department's beloved unofficial mascot.

A museum dedicated to the mysterious cryptid.

This National Natural Landmark is one of the best examples of a “mass wasting” in the world.

The home of a formerly enslaved man who went on to become a prospector, entrepreneur, and activist for Black rights.

Paleoamericans built these ancient walls high in the Colorado Rockies as part of an extensive hunting system.

The giant stump of the once towering cottonwood where Ute people held tribal meetings.

Birds with backpacks expedite film development for a rafting company on a remote Colorado river.

This restored farmhouse is a time capsule of a 19th-century Colorado homestead.

Open-air cremations in Colorado's self-proclaimed spiritual mecca.

This 19th century jail was mainly used to incarcerate the drunk and disorderly.

Two creeks flow out of either end of this canyon in opposite directions.

This sidewalk tribute honors Colorado's great culinary creation.

A coal fire has been burning underground here since 1896.

The site where a nuclear bomb was lowered over 8,000 feet underground and detonated as an experiment in natural gas extraction.

The burial grounds of a secret society includes fences topped with fake Tesla balls.

The world's largest sticker ball weighs in at a mighty 231 pounds.

This Chinese-style quartz sundial was saved in its final hour.

Metal water storage tank turned ethereal concert hall.