Circus cemetery for all the “showmen under God’s big top.”

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

The fairy tale castle of the "fairy-tale king."

The prototype for all Nazi concentration camps.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

The yawning maw of this pagan visage is said to bite off the hands of liars.

This sprawling mini-golf empire is an impressive testament to a disappearing attraction.

Wisconsin's most celebrated export gets the royal treatment on I-94.

A place to eat for on-the-run agents and espionage enthusiasts.

An old-timey peepshow allows visitors to gawk at some of the world's most freakishly large footwear.

A museum dedicated to the history and exploration of both popular music and science fiction.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

Hear the quietest sound from across the dome.

Public access to clean drinking water was an instant hit among the masses.

More than 5,000 contemporary and "historic" mustards from around the world.

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.

Less a museum than a bizarre fantasy world created by artists and engineers.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

As its grandiose name implies, this wooden dome is unsurpassed in size.