In this desolate valley resides a gorgeous set of rocks sporting a technicolor design.

A massive collection of petroglyphs dating back some 40,000 years.

Home to nearly a third of the world's mud volcanoes, Azerbaijan is home to a messy, bubbling, and sometimes explosive landscape.

One of Hollywood's most iconic actresses was born in an upscale Brussels neighborhood in 1929.

This Greek temple, open only an hour a day, was the site of a war of tastes between an architect and an artist.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

On top of a resort town as old as the Bronze Age sits an incredible war memorial statue overlooking the beaches below.

A curious little museum dedicated to the furry feline in the cat haven that is Old Town Kotor.

One of the world's few mounted blue whales, its jaws are hinged open allowing visitors to descend into a lounge.

This museum is dedicated to the most famous Irish writers in history.

After it was swallowed by a Georgian mansion, this medieval castle remained forgotten for centuries.

This is the largest cemetery in Ireland and the first cemetery museum in the world.

Extremely isolated Silk Road caravanserai in the middle of nowhere.

An unusual monument to a gentle giant who became a Kyrgyz hero.

This retro, UFO-like structure is a remnant of the Soviet-era circus.

The former "holiday home" for monks at the Durham Cathedral.

Celebrated in poem, this tiny hidden cemetery has a big and grisly history.

A black cat protests the City Guild in Riga's Old Town.

3,000 market stands in five former Zeppelin hangars.

These 90-year-old murals of local kings, Vikings, and outlaws hide in plain sight in a beautifully baroque shopping arcade.

Hidden beneath a beautiful overlook you’ll find the history of the city depicted in comic strip format next to a pay toilet.

Eclectic final resting place of the controversial explorer.

The ghosts of Britain's telecommunication past sit rusting away in a small village in England.

A century-old stone hermitage overlooks this remote pass in the Hoggar mountains, surrounded by a landscape of eroded volcanic cores.