A collection of more than 12,000 shoes, displayed in a building shaped like a shoebox.

The stunningly blue waters of these beautiful caves also have a violent past.

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

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

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

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

Illegal drag racing two stories beneath Chicago’s streets.

One of the few remaining relics of the meatpacking hub that made Chicago the "hog butcher to the world."

This surprising gem is a world-class archeological museum hidden at the University of Chicago.

The last masonry skyscraper ever built reveals a transitional moment in architectural history.

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

Taxidermy of the racing horse with a huge heart, who inspired hope in the Depression.

Alexander Hamilton’s creation caused quite a bit of controversy.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

Rhode Island's tallest building bears a resemblance to the "Daily Planet" building and has been empty for more than five years.

From horses to stainless-steel trucks, this iconic Providence burger wagon is one of the oldest mobile diners in the country.

The stone sculpture of an Ottoman soldier is an homage to a lost Providence landmark.

An overlooked memorial honoring the local Washington residents who died in World War I.

The national park was once a plantation estate.

The 28,000-year-old specimen is remarkably intact.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

The most accurate timepiece in the world.