Take a hidden path to the mouth of the cave to watch millions of bats swarm at sunset.

A well-studied colony of endangered bats roosts in this abandoned Victorian Gothic mansion.

This breathtaking island on Rwanda’s Lake Kivu is a haven for thousands of fruit bats.

A massive cave once a secret military base is now home to thousands of bats.

Abandoned railroad tunnel is home to a colony of three million Mexican free-tail bats.

This unique tower has been home to malaria-fighting bats for 100 years.

This large cave is a summer home to thousands of bats and has a rich history dating back to prehistoric times.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

The summer home of the largest colony of bats in the world.

Thousands of Mexican Free-Tailed Bats soar around an abandoned storm drain at sunset each summer.

This museum dedicated to the history of the medical bone trade and human osteology.

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.

The smallest country in the world.

Dedicated to one of Spain’s most talented painters and also one of the least known.

This arcade is one of the last places to catch a public performance by the now-defunct ShowBiz Pizza's house band of animatronic animals.

More than 100 antique vending machines housed in a used tire shop sell everything from candy to sake and ramen.

With no menu and no sign, this 130-year-old taverna doles out affordable home cooking.

A folk-art cottage and hotel straight from a Slavic fairy tale.

A former drinking water storage reservoir transformed into a sunken garden.

This "witch's market" is filled with Amazonian herbs, remedies, and the occasional libido-strengthening tincture.

Why walk on this historical site when you can zoom down instead?

A unique Buddhist temple with strange statues, beehives, and dinosaurs.

Kayak out to a floating restroom.

This enchanting hill is home to fairy lore and a sinister local mystery.