This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

Down this yellow brick road, visitors are treated to toadstool houses and massive mushroom sculptures.

In Midtown Atlanta, tons of marble appears to be devouring a Fiat Panda at this unique art installation.

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

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

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

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

A striking symbol of the Bulgarian capital.

Sofia's legislative center is continuously reinventing itself.

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

This intricate Hindu temple is the largest of its kind outside of India itself and was constructed like a giant puzzle.

Created as a punny statement about genetic engineering this monstrous hybrid statue has become a beloved icon.

A 26-foot shark sculpture—a statement about bombs—set off a municipal battle royale.

Berlin's beloved bear is immortalized at the Museum für Naturkunde.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

Countless grotesque faces stare out from this eerie Prague art wall.

The largest fountain in Bratislava.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

A 125-meter long "tribute to the Brazilian people."

This massive Brazilian church is built like an angular, technicolor pyramid left by Mayans from the future.

This stunning Brazilian library contains the largest collection of Portuguese texts outside of Portugal itself.

Crumbling remnant of Rio's colonial past tucked behind Corcovado mountain in the neighborhood of Cosme Velho.

Beautiful public park off the beaten path and away from tourists.

One of the largest mechanical models of the solar system in the world.