The largest of London's subterranean rivers and once a mad, bad center of London life.

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

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

The ruins of a megalithic monument sit right in the garden of a luxurious Maltese resort.

It's good luck to be mocked by this monkey.

The jaw of one of humankind's earliest ancestors on display at an overlooked geology museum.

This tiny 1930s Art Deco airport is a beautiful remnant of a bygone era.

One of Bristol's best-hidden gems has ties to Lord Byron, whence it became the nation's first reformatory school for girls.

An impromptu shrine appeared shortly after beloved "Torchwood" character Ianto Jones was killed off the show.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

A portly statue of a golden boy commemorates an unusual cause of the Great Fire of London: the sin of gluttony.

Formerly known as the Malay Quarter, Bo Kaap is a colorfully-painted suburb located in the “Mother City” of South Africa.

This African beach is home to thousands of rare mainland penguins that are known for their annoying voice.

Haven for Cape Fur Seals, until the Ring of Death of jumping Great White Sharks arrives.

Northern Ireland's Brobdingnagian stepping stones.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

The atmospheric road was never meant to be so creepy.

The ship built to ferry passengers and goods to the doomed Titanic is now the last remaining White Star Line vessel.

Why is there a vintage Rolls Royce in this Buddhist temple?

An ancient temple to the Hindu god Shiva surrounded by jaw-dropping scenery.

An ancient stone fortress considered by many to be the eighth wonder of the world.

A Bohemian "anti-hotel" offers off-kilter stays in Sri Lanka.

This elaborate temple was built around one of the Buddha's teeth.

Two women with a flair for both adventure and artful clutter created this singular round home.