Once an indicator of social class, the color blue has come to define this city on the edge of the Thar Desert.

Nordic giants resurrected from the sea and restored to their former greatness.

Old Danish castle immortalized in Shakespeare's Hamlet.

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

Sofia's legislative center is continuously reinventing itself.

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

A scenic UNESCO site that doubles as a habitat for various forms of wildlife.

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

In the hometown of the Catholic saint and Nobel Peace Prize winner, a memorial dedicated to her legacy.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

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

A museum dedicated to the former country.

A magnificent place to see authentic paleolithic cave paintings that are an astounding 33,000 years old.

The small alleys in Lübeck's Old Town are a result of medieval urban sprawl.

A stunning gilt bronze relief denounced by Hitler as "degenerate art"—even though it was dedicated to the Nazi leader.

Böttcherstraße's bells, extolling Nordic virtues and the great conquerors of the world.

The Bauhaus-style former industrial complex is considered the world's most beautiful coal mine.

This fountain of a little boy that spits on passersby at erratic intervals is a town icon.

The largest and best preserved necropolis in the Western Mediterranean.

A statue honors the local legend that the devil helped build St. Mary's church after being tricked into thinking it was going to be a wine bar.

A stunning two-story timepiece within a medieval Brick Gothic church.

The bells remain in a shattered heap exactly as they fell when the church was bombed in World War II.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

The collection of intricate sculptures includes one carved from a mammoth's tusk