This smaller cousin of the Forbidden City has gone from ancestral sacrifice to tourist's whispers.

Pop culture has helped to keep this iconic British building from being destroyed.

One of the largest museums in Ukraine remembers the story of the German-Soviet War in iconic, brutalist style.

An ancient capital city that dates back 3,000 years and harbors many surprises.

A more chill but no less fascinating version of the famous ancient archeological site.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

This elegant arc of a waterfall marks a religious turning point.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

The most powerful waterfall in all of Europe.

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

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

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

This spaceship-like Serbian monument reaches for the stars in celebration of the fallen fighters of fascism.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

Serbia's master of striking memorials erected a forgotten, hidden gem in the hills outside a tiny village.

This ghost town in Belgium will lose its street art when it ceases to exist.

The vast chamber inside this abandoned cooling tower looks like something out of a sci-fi dystopia.

Small church on top of a huge rock column.

Giant stone letters dedicated to the founder of Armenia's alphabet.

These Stalin-era industrial 'death traps' hang lifeless above the city

Unusual building appears to be haphazardly built from randomly piled bricks.

The charmingly disheveled clock tower of Tbilisi's puppet theater.

Croatia's towering concrete blossom grows from the site of a World War II concentration camp.