Where monkeys run wild and the humans are caged.

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

St Bernard de Clairvaux Episcopal Church, better known as one of the oldest European buildings in the Western Hemisphere.

Disney's abandoned animal island is now an overgrown ruin that was almost the coolest attraction ever.

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

The museum moved on, but the diorama remain.

A charming remnant of 19th-century fishing towns sits on Michigan’s Leelanau Peninsula.

Two dozen rescued bears roam (mostly) free at the largest bear ranch in the U.S.

World's largest Christmas store.

Dilapidated Mayan-themed ballroom was one of Detroit's most popular venues through the 40s.

Opulent downtown movie theater now houses cars as an indoor parking garage.

The remains of an abandoned dinosaur theme park litter the woods just off the highway.

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.

The only surviving prototype for Buckminster Fuller's house of the future.

Abandoned concert venue legendary for its rock counterculture.

Buy a token from the liquor store and you can make this beast spew flames on command.

Roses and other fascinating flora fill this garden built to commemorate Britain's immortal Bard.

A sprawling outdoor museum filled with larger-than-life works of art.

Planes, trains, and automobiles have all been sunk as attractions at this Illinois diving spot.

The final resting place of up to 6,000 Confederate soldiers, the largest mass grave in the Western Hemisphere.

This modest post office sits on the site of H.H. Holmes' famous murder castle.

Former hotel turned into haunted playground.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.