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

"Unity, Creativity, Beauty."

A magnificent, glittering building tucked into a tiny Bulgarian mountain town.

A mountain pass in Bulgaria's Balkan Mountains was the site of four historic battles.

A gigantic statue of a Russian soldier watches over the ancient city of Plovdiv, a prominent reminder of the Soviet period in Bulgaria.

This massive stone and steel monument remembers a century-old battle that cost thousands of lives and nearly destroyed the city.

Outstanding, eerie frescoes and decorations fill this 19th-century monastery.

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.

This once-grandiose behemoth of a monument from the socialist era now sits quiet and closed up.

A striking symbol of the Bulgarian capital.

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

The site of many battles and tragedies, including the 40 maidens who leapt into the sea.

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

This historic black and white monastery is one of Bulgaria's architectural jewels.

This massive concrete sculpture is said to be the heaviest communist monument on Earth.

An abandoned saucer-shaped monument in the Bulgarian mountains.

Cavemen, elephants, and eagles greet passengers driving through the town's main intersection.

A small 12th-century temple surrounded by waters believed to have curative properties.

Bombed and burned, this monument represents the often controversial ties between Vietnam and Cambodia.

One of the biggest markets in Asia, under one of the continent's largest domes.

More than 100 Hindu temples are slowly being swallowed by the forest.

The capital of Cambodia is named after the hill on which this ancient temple complex stands.

The first English fort built in India.

Kolkata’s only Portuguese church has a curious link with chickens.