A sculpture of a salmon swimming through a brick building.

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.

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.

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

An abandoned saucer-shaped monument in the Bulgarian mountains.

A striking symbol of the Bulgarian capital.

Sofia's legislative center is continuously reinventing itself.

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

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

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

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

"Unity, Creativity, Beauty."

This enormous World War II relic is one of the largest wooden structures in the world.

Oldest building in California still in use.

This candy-colored storybook village originated as a 19th-century Methodist campground.

A misnamed well, with a deep dark past.

The blinking light atop the iconic landmark has been sending secret messages for decades.

A lonely Gondola stuck on a traffic circle sits in a spot where it once would have floated down the Grand Canal.

A free library to stumble across, one of many placed worldwide if you know where to look.

Making Ice Cream Hip Since 2008.

A six-ton wedding present for the King of the Scots.

The final resting place of soldiers' loyal canine companions.