This beautiful system of tunnels built into natural rock serves as a centuries old plumbing system.

Burial site of a Jewish prophet revered in Iran.

This ancient stone bridge is a hub for daredevils.

An ancient fortified mound raised over the millennia from settlements built one on top of the other.

A bloody history is captured in this former prison turned museum.

This lake in northwest Iran has started turning from green to red more frequently than scientists are comfortable with.

Modern-day cave dwellers carve elaborate homes out of volcanic debris.

The largest covered bazaar in the world.

The world's longest nonstop reversible cable car soars through spectacular scenery to the medieval Tatev Monastery.

Right up until the 20th century this network of man-made caves was the biggest village in Eastern Armenia.

A scenic canyon with thick forests and historic ruins.

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

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

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

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.

Mysterious hillside with a continuously burning natural fire.

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

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

Legend says these stone structures are where the doomed citizens of a vanished village sent themselves to die.

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

The decaying remains of a once-luxurious Soviet spa town.

Small church on top of a huge rock column.

These Stalin-era industrial 'death traps' hang lifeless above the city