The statues commemorate the legendary mass killing of escaped circus monkeys.

Performers, intricate sets, and a real speakeasy tell the story of the 18th Amendment.

These ancient ritual mounds are our best window into the culture of the ancient Mississippians.

The ruins of a cotton mill that was burned in the Civil War are still hidden in a Georgia forest.

This intricate Hindu temple is the largest of its kind outside of India itself and was constructed like a giant puzzle.

The perfectly named cave drop is the deepest in the continental United States, almost matching the height of Seattle’s Space Needle.

A take-out restaurant that only serves cuisine from countries with which the United States is in conflict.

An abandoned incline railway site is now a green space with six acres of trails connecting hilltop neighborhoods.

This quarter-mile tunnel under the Bluff in Pittsburgh bends at a 45-degree angle.

The souvenir got the company’s founder out of a pretty pickle at the World’s Fair.

The legacy of baseball great Roberto Clemente is preserved in a retired Pittsburgh fire station.

Once the most painted on object in the world, this short campus fence is well on its way to being so again.

Hundreds of protractors affixed to surfaces all over the city.

A giant ball made from pieces of an old Jeep.

A unique workspace where offices reside on pirate ships and inside gingerbread houses.

It may appear to be a fancy junk yard, but each item has a story to tell and a lesson to impart.

This museum dedicated to an oft-overlooked support industry features a surprisingly moving brass diorama of a man being saved from a sinking car.

A strange egg in a mucky bog of western Ireland marks the spot of an aviation milestone.

Though they've since been renamed, these two streets hint at Dublin's darker days.

More than 5,000 artifacts donated by the people of the city, plus a room entirely devoted to the band U2.

One of the largest pieces of scientific equipment ever carried on a NASA space shuttle sits in a Chicago alley.

What was once one of the country's largest confectionary plants is now an abandoned ruin, but is still pretty sweet.

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

A journey begins with a single step, and for many, the road-trip of a lifetime started at this Chicago intersection.