The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

At the time of its completion, it was the tallest dam in the world.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

One of the smallest towns in the United States.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The first declared National Monument in the United States.

The world's largest Holstein cow.

A true roadside icon standing on the same plains that the herds once roamed.

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

One man's love for East Coast diner culture brought an entire eatery all the way from New Jersey to Colorado.

Neal Cassady may still have an open tab at one of Denver's oldest watering holes.

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

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

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

Each year, teams of the world's best snow sculptors have 65 hours to create frozen masterpieces.

This underfoot portrait is the work of a disgruntled painter inspired by a tragic poem.

Final resting place of a 19th century gold prospector and convicted cannibal.

There are eight natural springs around town, each with a slightly different taste.

This hot dog-shaped diner has moved all around Colorado, never been to New York.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

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

This deserted Gold Rush town is home to a Masonic lodge that, strangely enough, still holds meetings.