A 30-acre garden inspired by the principles of modern physics.

A Memphis park where you can walk the whole Mississippi River in one go.

All of Thailand's architectural landmarks, plus some made up ones, all viewable via two-seater bicycle.

The largest stone moai on Rapa Nui.

This battery powered bell has been ringing since 1840 and is one of the worlds longest running science experiments.

A metal tree emits eerie, melodic notes on top of Lancashire's Crown Point.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

American soldiers discovered Europe's best one-liner at the end of World War II.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The stoutest tree in the world.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Virgil's many-mouthed gateway to the underworld.

A museum befitting the city responsible for supplying the majority of the world's LSD.

The original goat tower, the one that started it all.

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

Towns with a resource known as "white gold," valuable enough to fight a war over, now stand ghostly and empty.

The tallest bronze seated statue of the Buddha in Japan.

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

The third-tallest statue in the world depicts the "Buddha of Infinite Light," complete with observation deck in his chest.

Unicorns, elephants, and bears, oh my!

Since 1973, this block has been home to the most concentrated collection of murals in San Francisco.

Giant topiary dog once played a role in a terrorist bomb plot.

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

A rotting tree in the middle of Seattle doubles as an elaborately-controlled art piece.