Orthodox church partially financed by Tsar Nicolas II.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

A hot dog stand where the heads are just as hot as the dogs.

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

Comprised of Spanish war cannons, this sculpture once graced the bow of a WWI warship.

A six-story-tall golden pyramid, surrounded by a moat.

Behind a modern brick exterior lies the oldest continuously-operating lunch-car diner in the United States.

The building was originally a gas station built to resemble a Japanese tea house.

The spaceship-like theater, which is still in use, was one of the most popular exhibits at the 1964 New York World's Fair.

A house and yard adorned with bizarre concrete sculptures in a Milwaukee suburb.

One of Frank Lloyd Wright's final works was this UFO church.

The preserved remains of the former Milwaukee County Hospital for the Insane are hidden in the wooded grounds of County Park.

A circus of light and sound forms a sensory ode to an iconic train that will never pass through town again.

What appears to be a wizard's lair in Milwaukee actually houses a massive water pipe.

A group of artists transformed this desolate city alleyway into an outdoor gallery of street art.

Robots, lasers, and whoopee cushions, oh my!

An off-the-beaten-path place to literally hang beneath Milwaukee's Holton Street Bridge.

A unique botanical garden housed in three giant geodesic domes.

Statue dedicated to the star of an old television show.

Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

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

This striking art museum holds an amazing series of curiosity cabinets.

The bugs crawling down the front of this office building are almost as big as a '68 VW Beetle.

A wonderfully curated used bookstore in an airport.