This ancient cave is home to a museum, bar, and is filled with fluorescent minerals.

A sculpture for the sun and stars, created by Nancy Holt.

The fifth-longest natural arch in the world, and the longest outside China.

A house carved into a rock in the 1940s.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

You might want to bring a rain jacket to this travertine triple waterfall.

A picturesque (all-natural!) beach in a landlocked state.

This depiction of the earth mother welcomes new life into Aurora Highlands.

No one knows exactly how deep the world’s deepest geothermal hot spring is.

A Rocky Mountain city provides a happy ending for a pinto pony and his Brobdingnagian red chair.

A dangerous narrow-gauge railroad once traced a route through this striking canyon.

It would be easy to walk past this unusual piece of art and have no idea it pays tribute to the odd life of a real chicken.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

A hotel with a rich Wild West history of miners and bootleggers.

An impressive collection of over 50,000 minerals including moon rock from the Apollo 17 mission.

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

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

This spectacular track has run continuously since 1882.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

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

A crumbling hospital from the 1850s on Roosevelt Island.

A grotesque Fiji merman dwells within this traditional Dutch-style building.

A blend of art, antiquities, and Americana fill this museum, surrounded by whimsical, enchanting gardens.

Incredible miniature towns and buildings created and decorated with thousands of tiny rocks.