The birthplace of modern China.

The powerful party began with a secret meeting in this shikumen in 1921.

An out-of-place slice of France, smack in the middle of Shanghai.

A labyrinth of clothing, electronics, and other counterfeit items.

This psychedelic tourist trap is a leisurely descent into madness.

The oldest surviving wooden bridge over Rhine lets travelers cross easily from Switzerland to Liechtensten.

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

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

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

These abundant, over-the-top monuments are so widely scattered that they define the entire compact capital cityscape, often leading to jokes about whether there are more statues than residents.

Sip cherry liqueur at a bar dating back to 1840.

This tile-work piece featuring a chicken riding in carriage is both a remarkable artistic creation and a social commentary of politics and culture in 17th-century Portugal.

A haunting contrast of trains that both saved and took the lives of Jewish children in Nazi Germany.

You've probably seen these distinctive orange-tiled columns on the big screen.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

Germany's Glienicke Bridge has a shady history of clandestine meetings, espionage, and spycraft.

Tiny memorials honor individual victims of the Holocaust.

Cold war icon and onetime "hole" in the iron curtain.

A restaurant and observation deck built in a unique broadcasting antenna.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Designed to resemble foreign architecture, this mosque-looking structure was used to pump water to a royal fountain.

One of the largest refracting telescopes in the world, and the first built specifically for studying astrophysics.