Take a dip in the world's largest mineral hot springs pool.

Even in death, he's still your huckleberry.

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

The contents of this safe survived a 37-kiloton nuclear bomb.

A facility built in 1992 for an underground nuclear test remains in place today.

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

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

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

This small piece of railroad history sits behind the parking lot of a chain grocery store.

Check out a hidden collection of vintage neon signs.

This Colorado gallery is primarily for cars, but its collection also includes quilts, pottery, and more.

Once named the “world’s oldest gas station” due to its unusual construction material.

Once a lonely sentinel on the edge of the Great Plains, this rebuilt trading fort offers a glimpse of life on the Santa Fe Trail.

A place to see how French aristocrats lived in the early 1900s.

A hotel and restaurant serving as the mecca of kitsch.

This colorful palace is an oasis of calm amid the hustle and bustle of the Buriganga riverfront.

Every last book in this bookstore is signed by the author.

Western New York's largest independent bookstore doubles as a historical repository of all things Niagara Falls.

A quirky bookstore hidden beneath a sea of whitewashed Greek villas.

This sprawling bookstore spans four floors and has more than a million books in stock.

The oldest hotel in the world has been operated by the same family for over 1,300 years, even catering to samurai.

A little-known mural reveals the hydrological reason for Atlanta's founding in this location.

Conspiracy theories and occult legends surround this mysterious natural rock formation.

An alluring, arid botanical garden home to a bewildering variety of cacti both endangered and common.