During World War II the Thorp building was guarded by the OSS, FBI, and US Navy because of the top-secret bombsight being produced there.

1887 era Russian Orthodox church in Minneapolis.

This posh mansion began as a family's estate and ended as the site of a murder ripped from the pages of a pulp novel.

Home to part of the world’s largest private collection of original manuscripts and documents.

This rare vessel mixed luxury with labor before being converted to a museum and sometimes haunted maze.

An abandoned bus station transformed into a museum dedicated to the history of Greyhound Lines, in the place where it all began.

The first hand-illuminated, hand-written bible since the invention of the printing press.

This erect, phallic geological spire wasn't always named so domestically.

A local scoured more than 1,000 acres for stone to create his masterpiece.

This structure among the trees was the result of divine inspiration.

These early tent-shaped grave coverings are unique to Appalachia.

This head-spinningly bizarre Depression-era art cave is wall-to-wall quartz and Jesus.

A museum of the dime museum that features weird entertainments of yesteryear, from feejee mermaids to flea circuses.

The remains of a enormous earthen figure of unknown origins cuts across a rural Wisconsin road.

A large circus museum with summer performances.

Homemade outdoor church and sculpture garden decorated with glass shards.

This secret gem of a toy store houses a rideable carousel populated with fantasy animals.

This large midwestern cavern features impressive rock formations and an underground waterfall.

A single artist is behind these large-scale models made of hundreds of thousands of two-inch wooden matchsticks.

This pristinely abandoned filling station on the edge of a graveyard is populated solely by unsettling mannequins.

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

Two hundred tons of pioneer artifacts were painstakingly recovered from a shipwreck at the bottom of the Missouri River.

The house where the famed outlaw was shot by a dirty coward is now a museum to the criminal's legacy.

The fastest mail service in the west is tracked and memorialized along this 1,400 mile trail.