This one-time health resort was used by aristocrats around the world.

Hindu temple of the dead home to hundreds of long-tailed macaques.

The home of half the world's population of critically endangered mountain gorillas.

Founded in the 4th-century, the town of Pernik plays host to the Surva Carnival⁠—a magnificent display of masked Kukeri dancers.

This top-secret nuclear bunker hidden in a Bosnian mountain has been converted to a modern art exhibition space.

Artists made this mosque into a marvel of Ottoman baroque architecture.

The elliptical citadel resisted the advance of the mighty Ottomans several times, thanks to the military prowess of the "Dragon of Albania."

A wunderkammer of gold and silver reliquaries and ancient saintly bones.

A forgotten and crumbling Yugoslav monument to the victims of fascism.

A sprawling nature preserve harbors the world's only living dragons.

The unique design was created by the traditional way communal rice paddies were divided among the indigenous people.

A real-life "hobbit" cave in Flores, Indonesia.

Three wildly colorful calderas top this otherworldly volcano chain.

This Slovenian museum houses the country's largest collection of painted beehive panels.

These delicate sand pyramids look like naturally occurring gothic spires.

This was the second largest mercury mine in the world and one of the oldest preserved mine complexes in Europe.

The summer residence of a Spanish ambassador who brought viticulture to an impoverished region, sparking its transformation into one of the world's best wine regions.

Apparently, Hell has waterfalls in Slovenia.

This former railway facility is the oldest in Slovenia, and now houses a museum showcasing the history of steam locomotives.

Colorful power station with a chimney equipped with a gallery for exhaust monitoring equipment.

This 14th-century monastery survived Turkish raids, Nazi occupation, and even a stint as a spot to store towels.

Strange rumors surround the artist who created these solemn metal guard dogs.

A relic from the Industrial Revolution got a second life as a contemporary performing arts space.

A beautiful drive through the foot of the Alps traces the path of 15th-century Turkish raids.