Chicago's North Park Village was once the largest municipal sanatorium in the country.

These experimental weapons brought World War II to Nebraska as well as 26 other U.S. states.

If you ever wanted to own an actual piece of Disney World, this is the place to shop.

An abandoned Victorian house transformed into a museum and store filled with taxidermy and vintage goods.

World's largest magnetic research facility.

A tribute to a future time when gravity is conquered.

Visitors to this shop will find fossils, minerals, meteorites, skeletons, oddities, and much more.

Hidden in the plaza next to a pizza shop is an amazing little oddities shop.

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

The only Florida state park with publicly accessible caves.

A giant 400-acre preserve in North Florida for displaced wolves.

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

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

The scuba diving training facility was named for the steam that rises from the cave's chimney.

A small Chicago museum filled with thousands of preserved butterflies, beetles, and more.

A relic of the Cold War in Chicago.

This bronze sculpture on a former squash court marks the secret origins of the Atomic Age.

A Japanese temple, old German townhouses, and public chess tables offer a peaceful escape from the bustle of the North Side.