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

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

A display of magnificent stained glass windows is the first exhibit of its kind.

Years of archaeology, just chillin' by the water cooler.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

All of Chicago's wood-paved streets are long gone but two alleys remain.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

Banksy's image of a naked man dangling from the window of a sex health clinic.

An ancient hotspot for spotting schools of fish.

At just 51 feet and 10 inches long, it's the shortest street in England.

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

The secret wartime bunker built on the platforms of an abandoned Tube station.

The Tudor-style cottage in the middle of the square is not quite what it seems.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

Half-drowned wooden stumps and stone blocks are all that remain of a Victorian landing that was destroyed by storms.

A unique tribute to the millions of animals who served and died for the British military.

A speakeasy takes on Chicago's drinking culture.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

The palatial McDonald's that inspired Wesley Willis.

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

No one knows how many bodies are in this vault in a Chicago public park.

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.