This alleyway was named to honor the memory of a beloved local dog.

This church houses the “incorrupt” body of its founding Bishop.

The skeleton of a whale that beached itself in this Irish town is now on display in their public park.

An enormous park-like oasis, full of famous Chicagoans' graves.

A monument to the art of slicing people open.

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

Robots, lasers, and whoopee cushions, oh my!

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

Once a speakeasy operated by Al Capone, this Milwaukee cigar bar is now a haven for ghost hunters.

A trailblazing sovereign nation tucked in the American state of Wisconsin.

This national park dedicated to the tallgrass prairie ecosystem still displays its military past.

The final resting place of the world's first nuclear reactor.

What was once the second largest steel mill in the US is now a sprawling complex of modern ruins.

A historic and oft-filmed prison stands in a Chicago suburb.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

A century-old network of freight tunnels underneath the city's historic business district.

In Chicago, a pizza-enthusiast has opened a museum dedicated to the history of pizza.

These abandoned grain silos and tunnels are an urban exploration dream.

The world's only known button museum.

A lush green oasis in the middle of Chicago.

What may be America's largest classic video game arcade lurks inconspicuously in a Chicago suburb.

Julia Buccola Petta's body was peculiarly well-preserved when it was exhumed six years after her death.

People escaping slavery passed through the oldest house in Lombard, Illinois on their northbound journey to freedom.

This botanical garden outside Chicago boasts an array of more than 300 varieties of lilacs.