A vibrant street away from the typical tourist track, lined with colorful, mosaic-covered houses.

Stenciled handprints and wall paintings dating back 10,000 years, some of the earliest forms of cave art.

This stunning mass of ice spans 121 square miles and is still growing.

These small sculptures pay homage to the lovable star of an iconic Argentine comic strip.

A bright little alley in La Boca is a part of tango history.

This historic, palatial theater is now one of the world’s most beautiful bookstores.

This colorful creation wasn't always a welcome part of Toronto's Moccasin Trail Park.

A unique collection of Science Fiction, Fantasy, and everything in-between.

A collection of human remains, animal body parts, and other macabre curiosities all legally for sale.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

A botanically themed auditorium blooms within the world’s last operating double-decker theater.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

The oldest continual pilgrimage site in Britain was supposedly created by a gruesome beheading.

Three bridges straddle a stream, one stacked upon the other.

A hermit's tiny cell built into the cliffside that saved him in South Pembrokeshire.

A breathtaking flower tunnel bursts with beautiful golden blossoms.

This abandoned asylum in Wales might look haunted, but it's still beautiful.

A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.

A subterranean playground in an abandoned slate mine.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.