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

This magnificent market stands as a poignant symbol of the suffering caused by the Spanish Civil War.

After a nearly successful attempt on Hitler's life, the conspirators met their fate in the courtyard of this Berlin building.

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

The largest stretch of the Berlin Wall is right on top of the former SS headquarters

Likely the world’s only place where you’re meant to skate on top of cars.

Tiny memorials honor individual victims of the Holocaust.

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

Check the time in 145 countries at once with this East German relic.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Brass plaques embedded in pavement preserve the memories of those who lost their lives at the hands of Nazis during World War II.

Every year, a sparkling cave is sculpted in the icy heart of a glacier.

Lombard Street may be more famous, but this is the real “crookedest street in the world.”

The world's most important buildings shrunk to a tiny size.

The medieval "dragon" on an Austrian city's coat-of-arms comes to life in a fountain.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

Tucked away near more famous landmarks lies a statue meant to symbolize the confluence and continuing development of human culture.

This memorial to a murdered empress took 20 years to design, then spent 30 years hidden away in storage.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

Edinburgh's oldest statue hides within a parking lot behind the city's iconic cathedral.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.