The world's largest occupied bat houses hold hundreds of thousands of flying mammals.

A building so large that it has its own weather.

A failed, un-built suburb that has been going feral for decades.

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

Over 120,000 curious objects that have shaped our modern world.

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

Where monkeys run wild and the humans are caged.

A monument celebrating the idea of reaching inaccessible places.

North Central Florida's largest flea market and a weekend roadtripper's dream.

A community of collapsing homes more than a mile out from the Florida coast.

A perfect circle of twenty-four mysterious holes dates back to prehistoric time.

This Florida sinkhole hides a rainforest-like micro-environment in its depths.

Where manatees are the snowbird vacationers in these balmy Florida springs.

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

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

The world's largest fully steerable radio telescope.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

The largest burial mound in the United States holds the remains of prehistoric West Virginians.

This rural community has attracted both scientists and techno-refugees due to its federally-mandated lack of technology.

A historic coal mine that doubles as a museum and tourist attraction.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Take a steam-powered ride straight out of the past on this Appalachian rail line.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.