This raised bulls-eye visible from space was the subject of an intense geologic controversy.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

When ecosystems collide in the arid Southwest.

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

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

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

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

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

Towns with a resource known as "white gold," valuable enough to fight a war over, now stand ghostly and empty.

A sculpture of a giant hand reaches for the stars in the middle of the Atacama desert.

Spanish religion mixed with local architecture has yielded a network of churches unlike any other.

An unrecognized micronation declared by Greenpeace to protect the glaciers of Chile.

The rusty hull of this 1899 ship serves as a tribute to explorers of the bottom of the world.

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

The remains of this visionary community can still be found much as it was a century ago.

This modern castle sat empty for decades before a fire inspired its builders to complete its luxury halls.

The world's longest known cave system.

A life-sized memorial to Harry L. Collins, the official corporate magician of Frito-Lay.

This 19th century mansion façade adorned with immigrant patriotism is a symbol of Louisville’s history.

The largest cemetery in Louisville is the final resting place of Col. Sanders and Muhammad Ali.

The only building in Louisville (hopefully) that contains two ancient holy skeletons.

This abandoned cemetery has a dark past of bodies buried over bodies.

The grave of the iconic Kentucky Fried Chicken mascot features a bust of the man behind the goatee.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.