The true jewel of Africa's west coast known as "Africa's Last Eden."

Eccentric concrete mansion and museum designed and built by hand from the inside out.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

Invisible bridge parts the waters, invoking biblical images and preserving the ominous feel of an ancient moat.

Australia's largest medical museum featuring a 19th-century pharmacy.

Rivers of cattle blood gone, a strange Escheresque building remains, the last of its kind.

The longest continuous lava tube in Oregon.

The house that took a plunge into the facade of a museum.

A chapel on a volcanic core, marking the end of a successful journey.

Machismo turned on its head: the lady's hand goes to the dude with the bigger brain.

A madman's personal garden filled with 1,000 sculpted heads.

A landscape decorated with enormous skull sculptures.

A hidden "place of interment for gentlemen."

This massive store is home to an eccentric collection of vintage, retro, and peculiar goods.

A castle perched precariously over the Crimean Sea.

World's largest permanent maze made of 18,000 conifers.

An enchanting monastery in the Spanish countryside appears lifted from a fantasy tale.

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

Wallabies live naturally on this Irish island.

This fantastical house shaped like a seashell brings aquatic design to architecture.

Micro-nation based around a nine-story high illegally built tower.

Series of underground houses inhabited continuously for centuries.

Record-holding guitar meant to promote country.

An artist's vision for connectivity spans seven continents and 16 countries.