A scenic canyon with thick forests and historic ruins.

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

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

Spring that emits water and fire at the same time is said to have remedial properties, and sparked its own religion.

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

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

In the foothills of the lesser Caucasus, a centuries-old fortress still stands.

This mysterious but iconic tapered tower appears in many Azeri fairytales and legends.

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

What might be the largest completely Jewish town in the world outside of Israel now faces dwindling numbers and empty streets.

The most visited pilgrimage site in Armenia once held a saint in a pit for 13 years.

This magnificent market stands as a poignant symbol of the suffering caused by the Spanish Civil War.

The building hides in plain sight in Ribadavia's historic Jewish quarter.

Tools, pottery, and mummies showcase the history of La Palma's native people.

This unique rock formation is quite the local celebrity, although one day it may come crashing down.

Head to the mountains to catch a glimpse of Spain's endangered subspecies of brown bear.

This Canary island is a quintessential example of nature’s beauty, and its unbridled fury.

Medieval ruins nestled within a breathtaking swath of Spanish nature.

This multi-level, aqueduct-footbridge hybrid is one of the greatest works of the Spanish Renaissance.

This ancient Visigothic church might hide an ancient treasure.

Haunting monument to the German Jewish philosopher who died while fleeing fascism.

The most elaborate of 12 medieval arched doorways to the old city of Burgos.

This Bronze Age man spent millennia buried in a mine, giving his bones an eerie hue.

A dictator's failed public works project has been reborn as two linked trails through spectacular scenery.