With over 12,000 different species of plants, this botanical garden is Japan's oldest and most diverse.

A former utopian healing center created by a huckster and built by derelicts.

The home of pigs, snakes, chameleons, and the alleged largest bunny in the United States.

Puffin enthusiasts flock to Europe's largest seabird cliff, which over one million birds call home.

The atmospheric road was never meant to be so creepy.

A giant concrete orb in far north Iceland marks the ever-shifting boundary.

This German fountain of a legendary apple wine-loving drink thief will spit on you.

At Monet's beloved home you can still see the Japanese bridge, waterlilies, and weeping willows that were the subjects of some of his most iconic paintings.

A Cold War command center is hidden under an idyllic countryside.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

An eerie, derelict amusement park in Berlin.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

This hobbit-y little hot spring may be the oldest spring used by humans in all of Iceland.

One of the most remarkable caves in all of Iceland was created by a once raging river of lava.

A 16th-century horror show built in a lovely Italian garden.

This elegant arc of a waterfall marks a religious turning point.

A tribute to the couples who brave long periods of separation during wartime.

A detached cement mixer has been transformed to resemble a relic from some obscure NASA mission to Oklahoma.

The flower-shaped temple in Virginia aims to transcend the boundaries of the world’s religions.

A line of abandoned, alien-like fortresses dot the mountains of North Italy.

On Japan's Tashirojima Island, cats are king.

A room hidden behind a swinging shelf in the children's section.

The magical, mossy forest that inspired Princess Mononoke.

The granddaddy of English geoglyphs dates back to the late Bronze Age.