Catacombs turned marketplace.

Black cat statues guard this temple-like Egyptian revival factory.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

The world’s largest truck stop includes a barber shop, chiropractor, and a huge museum with antique trucks.

Its incredible collection preserves 170 years of sewing machine history.

These massive mitts are made of 30 tons of devotional bronze.

One of the best examples of Art Deco architecture in the United States.

The collection is housed in an exquisite mansion that makes you feel like you've been transported to an Italian villa.

The fifth tallest statue in the United States is a shirtless monument to the oil worker.

These pretty kitties killed and ate as many as 135 railway workers.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

The palatial McDonald's that inspired Wesley Willis.

Odd, decrepit fountain honors Chicago author who had mixed feelings about his hometown.

To find the "unicorns of the deep" you've got to go downstairs.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

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

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

A lush green oasis in the middle of Chicago.

A community gathering place that once housed half-ton tanks and the World's Fair.

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

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