One of the biggest Buddhist stupas in Europe, hidden from most locals.

Take a hike to this unique rock formation formed by lava flows.

The abandoned military base looks like a post-apocalyptic wasteland.

300 years of pharmaceutical history on display.

The building's fluid, wavelike walls are a true feat of architectural ingenuity.

Resonant stone, that has been played since prehistoric times.

Swirling layers of white and red rock earned these mountains their festive nickname.

This striking icon of the disputed Republic of Artsakh caused a stir at a Eurovision Song Contest.

A scenic canyon with thick forests and historic ruins.

An abandoned Byzantine fortress and notorious prison.

This architecturally eclectic early-20th century mosque was built as a place of worship for the Islamic followers of a Jewish messiah.

An unexpected ghost village lurks on the southeast coast of Tenerife.

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

The village's cobblestone streets are lined with shops displaying exquisite copper craftsmanship.

Azerbaijani ghost town, decaying after a war left it an armed forces buffer zone.

Foreign invaders almost left this lovely Caucasus palace alone—almost.

A quirky house created entirely out of glass bottles combines a collector's spirit with an artist's flair.

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

Mysterious hillside with a continuously burning natural fire.

A place steeped in history that may be best known as the set of a 1960 film.

These rose marble urinals are the most luxurious loos in Liverpool.

A cylinder monument with a spectacular vista commemorates a friendship that some say never existed.

An architectural marvel that spans the Arda River, and has stories of a haunted past.

Rock carving created 1,300 years ago 75 feet off the ground.