They call this long foot bridge a swinging bridge, but really it's the bouncing you have to watch out for.

Just a few miles from downtown Atlanta is a trail covered in a crazy collection of outsider art.

Secret gardens just a few miles from downtown Atlanta.

Now harmless, this looming post struck fear into the heart of medieval troublemakers.

The Renaissance-era courthouse is a relic from the fortified town's centuries of Venetian rule.

This picturesque medieval monastery guards a small trove of historic treasures.

Colorful concentric circles honor a small Croatian town's supposed spot at the nucleus of it all.

A tribute to an iconic act of defiance from the Croatian War of Independence involving a small car.

Gargoyle head that brings good luck.

This scale model of our solar system hid in plain sight for years before a physics team sought out all the planets.

This stunning, out-of-the-way Croatian monument commemorates a community's uprising against occupying fascist forces.

The remains of a sunken military ship wreck visible through clear water.

A wonderfully strange collection of 500+ stuffed frogs doing people things.

A musical instrument played by the sea.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

An ethereal glowing blue ocean cave in Croatia.

There are plenty of wonderful panoramic vistas in Edinburgh, but not many are hidden smack in the middle of the Old Town.

Accessible only at low tide, the deserted island is dotted with World War II ruins.

This series of Scottish caves has no clear purpose other than baffling historians.

A massive underwater sinkhole made famous by Jacques Cousteau.

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

Learn about Iceland's hidden folk at this school dedicated to the study of elves.

This overlooked street light once served as a KGB dead letter box.

The world’s largest magazine collection was born from a single shelf in a teen’s bedroom.