A gorgeous stone viaduct crosses over a bucolic valley.

Inside the Šomoška National Nature Reserve exists a unique rock formation rarely seen in the world.

Climb around the high waterfalls on series of iron ladders and bridges within the wildest gorge in the Slovak Paradise.

According to a local legend, this old castle could only be built after a woman was immured in the walls.

Once the fallout shelter of a dictator, this sprawling bunker is now a combined history museum and contemporary art gallery.

What happens when you cross a mayor and a painter?

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

This 13th century Orthodox monastery is built right into the Moldovan cliffside.

This abandoned Soviet circus is slowly being restored to its Communist-era glory.

There is a mouldering Jewish cemetery hidden away in the capital of Moldova.

This sign marks the entrance to a tiny proto-state within the small country of Moldova.

The largest wine cellar in the world is a 150-mile network of underground caves near the capital of Moldova.

A forgotten remnant of the Soviet Union, Transnistria is an unrecognized country hidden behind a heavily militarized border between Moldova and Ukraine.

This 17th-century structure is a beautiful testimony to traditional Persian architecture

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

The colorful soil of Iran’s "Rainbow Island" attracts artists and nature lovers.

This ancient fortress in Iran was once the oldest and largest treasury in the world.

Hundreds of stones dangle from barren trees in the middle of the desert.

The hottest, driest, and most scenic desert on Earth.

A historic trade hub teeming with gorgeous architecture, colorful goods, and vibrant designs.

This vast, water-filled underground labyrinth can only be toured by boat.

One of the world's largest salt caves is filled with fragile salt sculptures, salt rivers, and huge salt megadomes.

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

A spectacular rainbow of stained glass makes the "Pink Mosque" one of the most beautiful in Iran.