These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.

Man-made geyser that rises to the exact height of the Gateway Arch.

Not to be confused with the iconic New York City skyscraper, this Chicago building is a vibrant hub for artists.

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

The palatial McDonald's that inspired Wesley Willis.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

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

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

It's a pretty creepy lock-up.

"We Seceded Where Others Failed."

Visitors flock to see this church tower's unintended feature: It happens to resemble a giant chicken from multiple points of view.

A building so large that it has its own weather.

This abandoned NASA launch site is now a memorial to a trio of astronauts who were killed there.

Meet manatees face-to-face at this zoo for native species.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

A monument celebrating the idea of reaching inaccessible places.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

In Florida, these naughty monkeys live on their own mini-monkey Alcatraz.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

A tribute to Ponce de Leon's supposed quest for eternal youth.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

A geological mystery on Camelback Mountain.