Marking the spot where a conquistador gave up his search for the fabled Seven Cities of Gold.

This abandoned prison castle has become an imposing gallery of graffiti art.

A museum where visitors can learn about greyhounds and (more importantly) pet them.

During the 1990's nearly all of the world's LSD is thought to have come from the operators of the lab once located in this missile silo.

Home to Hollywood history and a very special salt crystal.

Lone survivor from Custer's Last Stand forever preserved.

Home to the story of the outlaw turned funhouse mummy, Elmer McCurdy.

A funhouse dummy that turned out to be a real life mummy, Elmer McCurdy is an urban legend come true.

The Ozarks' strangest dwelling.

This haunted hotel built on natural springs once served as a hospital for a quack doctor promising a cure for cancer.

This century-old roadside attraction is full of bizarre rock formations.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

A peaceful place in the woods where everything is a work in progress.

A mysterious and terrifying public art goblin seemingly meant to inspire local legend.

This ostentatious Italianate palace of an Oklahoma billionaire is filled with several themed mini-museums.

Thousands of small machines line the shelves of this personal collection which definitely delivers on its name.

A mysterious light of unknown origin on the backroads of Missouri.

Nature's biggest mammal swims in landlocked Oklahoma.

This former mining town was named the most toxic town in America.

A whimsical tower with a spiral staircase, inspired by the Space Age and the Möbius strip.

A cave on the Maryland border where civilians took refuge during the bloodiest battle of the Civil War.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

An eclectic art form practiced by untrained masters is celebrated at this museum in the heart of Zagreb's old Upper Town.

They call buildings like this "mimetic architecture," but nothing has ever mimicked the taste of Moxie.