A shape-shifting buy-sell-trade bookstore, born to Beatnik Era spirit.

This restaurant offers the original California cuisine.

This subtle Berkeley paving stone actually marks off a lawless tube of air that extends into space.

Nose around a unique collection of more than 300 natural aromas used to craft perfume fragrances.

Climb to the top of this spiritual tower, and you'll be rewarded with spectacular views.

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

A mental health hospital dating back more than 139 years, now features a museum.

Travel through the wholesome amusements of yesteryear at this charming miniature village.

A recreation of an Old West apothecary full of curios.

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

The wreckage of a World War II bomber is hidden high in the Colorado wilderness.

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

The largest source of fossilized insects anywhere.

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

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

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

An architect in Aspen used psychedelics as his muse while building this mushroom masterpiece.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

This spectacular track has run continuously since 1882.

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.

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

This private residence was the template for one of the most beloved television homes of all time.