The world's oldest Jewish library was founded by Sephardic Jews in 17th century Amsterdam.

The last bastion of Roman presence north of the Alps looms over a German town.

The birthplace of Karl Marx is now a museum dedicated to the communist revolutionary's life and work.

An artificial date palm stands as a memorial to Warsaw's Jewish community.

In the summer, the area around this sculpture transforms into a vibrant concert venue.

These 18th-century paintings of Warsaw were used to reconstruct the city after World War II.

The final resting place of more than 200,000 people, this is one of the largest cemeteries in Europe.

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

A statue honors the children who fought Nazis in Poland.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

This historic rec center in the heart of Israel is a bastion of peace and togetherness.

Oldest Protestant church in the Middle East, designed to resemble a synagogue.

This unassuming oasis elevated just above the busy streets of Jerusalem offers one of the best views of the Old City.

After over 100 years out of service this landmark windmill once again turns as a symbol of Jerusalem's self-sufficiency.

The only quarter of the Old City not dedicated to a major world religion.

A "miracle" that seems to produce more holy fistfights than holy revelations.

Descend 2,030 years into the past in an ancient tunnel built to support Jerusalem's most famous wall.

The home of the Dead Sea Scrolls is an abstract modernist dream.

A hidden three-foot-wide house separates these two regal churches.

Elaborate tile work in this railway station tells the story of Portugal.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

A once-magnificent collegiate church is falling into ruin.

A marble Lucifer hides behind the pulpit of this Gothic cathedral.