A giant steel sculpture with animals in its shadows.

This enormous storm barrier is one of the largest moving structures on Earth, with each arm taller than the Washington Monument.

For over 100 years, this Indiana town has had a tree growing out the top of the local courthouse.

The rooster who crossed the road lives on forever in Takoma Park, Maryland.

Beijing's expansive subterranean hiding spot now crumbles away as a tourist destination.

Storybook cottage in Beverly Hills was once the site of 1920s silent film studio, affectionately known as "The Witch's House."

Limestone caves with spectacular showcase chambers.

Internationally known record store and purveyor of "dusties."

The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.

A series of modernist treehouse hotel rooms grace the outskirts of an Arctic forest.

Virgil's many-mouthed gateway to the underworld.

Obelisks and stone pineapples in the Irish countryside.

Sweden's first nuclear reactor, R1, can be visited 25 meters underground.

A tree-like building perches on its trunk in the Steglitz neighborhood of Berlin.

Dictionary Johnson’s favorite feline.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

Plot your trip through the city on the sidewalk.

An abandoned meat mecca now serves as an excellent locale for urban exploration.

This chilly Canadian hotel has a four-month lifespan due to the unusual material it's made of.

Home to Hollywood history and a very special salt crystal.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

A ghost town at the airport is now a refuge for blue butterflies.