An homage to the medieval rulers of Bulgaria.

Said to be the only museum in the world dedicated to the most classic of all blooms, the rose.

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

Rock carving created 1,300 years ago 75 feet off the ground.

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

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

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

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

Mysterious standing stone formations looks like a petrified forest.

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.

The remarkably well-preserved final resting place of a powerful ancient Thracian king.

In a long-dry lake bed, these groups of massive stone pillars bear a striking resemblance to clumps of everyone's favorite fungi.

UNESCO-protected ancient burial ground.

A striking symbol of the Bulgarian capital.

A spectacular Bulgarian cave resembling a devil's head with a waterfall rushing down its throat.

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

The ceiling of Prohodna Cave in northern Bulgaria affords a peek at the sky via two deity-sized-eye-shaped holes.

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

Bizarrely shaped rock formations in northwest Bulgaria come with equally bizarre legends.

An abandoned saucer-shaped monument in the Bulgarian mountains.

An ancient Thracian city where fire rituals were practiced on the largest cult altar in Southeast Europe.