The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

Dance on a hand-hewn log floor padded with bouncy boxcar springs at a saloon built in 1883.

These decaying bridges 1,000 feet high are a reminder of the skill it took to cross the Colorado Rockies by rail.

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

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

In the middle of a suburban Denver neighborhood is a cave that once provided solace for a prominent Ute chief and his family.

This Boeing KC-97 tanker is now a restaurant for aviation lovers.

This was once the home of Gahan's Saloon, Denver's most storied speakeasy.

A stark reminder of the huge nuclear weapons plant that once stood on the site and its effect on the surrounding area.

A research lab and hands-on museum where visitors can experiment with retro technology.

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

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

Metal water storage tank turned ethereal concert hall.

Possibly the world's only drive-in movie theater with an attached motel.

This razorback ridgeline has doubled as a scenic drive since the early 1900s.

The world's largest key collection features keys to the White House, Frankenstein's castle, and Hitler's bunker.

This iconic science fiction house still looks like something from the future.

While most of the games in this arcade take quarters, that would have been a small fortune when they were made.

One of the largest Buddhist stupas in North America is built of concrete designed to last 1,000 years.

Gleaming self-built castle towers made from beer cans and inspired by "Vitamin Mary Jane."

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

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

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

Community owned and operated, this property is home to a diverse set of nudists.