Underneath this Byzantinian church lies a necropolis filled with ancient tombs and the ruins of previous churches.

A collection of art from Bulgaria's time as a communist state.

Eastern Bloc nostalgia, anybody?

This building has two facades of clashing architectural designs.

Sofia's legislative center is continuously reinventing itself.

A vast Communist-era exhibition space in the Bulgarian capital.

"Holy Wisdom" overlooks the city that became its namesake.

A striking symbol of the Bulgarian capital.

A Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.

This medieval manuscript collection has some of the most obscure and ancient texts in the world.

Huge stairway leads to this massive gallery.

Men and special assistants stand by the road to sell the day's catch in this lakeside village.

This ancient monastery complex was transformed from an island to a peninsula when the lake was partially drained.

Armenia's premier center of astrophysical research was established during the Soviet era.

A geological oddity topped with a 2,000-year-old pagan temple.

One man’s collection of photography books has transformed into a charming exhibition space.

This little medieval church hidden in the center of Yerevan was lost and rediscovered—twice.

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

Nestled in a peaceful valley, this Armenian monastery may have been saved from Mongols thanks to the eyes of God.

This series of Armenian caves held the oldest brain, shoe, and winery in the world.

Called the "Armenian Stonehenge," this ring of menhirs pierced with holes may be a prehistoric astronomical observatory.

After visiting hours, this picturesque waterfall is essentially turned "off" to be used for hydroelectric power.

Centuries before the modern seismograph, Armenian monks measured quakes with this tilting pillar.

Destruction from Armenia's 1988 earthquake inspired an artist's sculptures of scrap metal.