A monument to the three wars that led to German unification towers within a Berlin traffic circle.

A monument to the man who almost killed Hitler.

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

The most visited, and possibly most controversial, museum in Germany.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

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

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

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

A mocking tribute to the past and modern leadership of Prague.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

Macabre astrological automaton clock dating to the late 1400s.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

Standing atop 2nd-century Roman ruins, this church is one of the oldest and most iconic in Old Cairo.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

Paris' linguistic guide to the international language of, yes, love.

The oldest stone house in Paris was built by its most famous alchemist.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

A floating cat sanctuary on an Amsterdam canal.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.