This erect, phallic geological spire wasn't always named so domestically.

Known as "The Hill of the Little Devils."

An entire city block built completely out of petrified wood.

A fitting attraction for the corn capital of the world.

Just a man taking his prehistoric pet for a stroll.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The ruins of Theodore Roosevelt's beloved ranch stand in a forgotten corner of a national park named after him.

A monument to the center of the North American continent may be off by a few miles.

Three legendary, living albino buffalo roaming their pastures for all to see.

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

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

Over 1.3 million confiscated wildlife products fill this macabre menagerie of illegal animal specimens.

This interpretive path lets you get up close and personal with dinosaur bones.

This once-popular otherworldly landscape was formed by one of the largest volcanic eruptions in history.

The largest dinosaur trackway in North America is tucked away among this canyon's ghosts and archaeological gems.

The scene of one of the darkest moments in American labor history has been left essentially untouched since the tragedy.

A collection of fading fantasy tchotchkes lines this dirt road in the Colorado wilderness.

The childhood home of Henry Jones Jr. is now an adventure-themed bed and breakfast.

See six states, pickled freaks, rocks, and antiques.

Wall to wall taxidermy at Denver's oldest and most exotic steakhouse.

Colorado's only true geyser is hidden within the San Juan National Forest.

This super steep hike ascends 2,000 feet in less than a mile.

A little-known hot spring haven right below the highway.