Op-art architecture designed for happiness.

The original burial place of this preeminent 18th-century Jewish philosopher was razed by the Nazis.

This monumental work of art symbolizes the coming together of a previously divided city.

A unique Holocaust memorial tells the personal stories of the Jewish residents exiled from greater Berlin.

This concrete residential area doubles as an open-air gallery.

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

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

Visitors can explore the role of mysticism throughout the ages inside this interactive museum of magic.

Someone loved this song enough to carve all of its lyrics onto a tree trunk in a Berlin park.

A surreal museum of extraordinary industrial objects.

Dozens of elegant ceramic tiles decorate these ancient walls, each displaying the Lord's Prayer in a different language.

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

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

A semi-scholarly approach to sex.

Hear the tales of New York's most notorious criminals.

A museum devoted to bringing to light forgotten or neglected histories through exhibitions, education and public programming.

A self-made museum in Queens, New York continues to display the work of a sculptor known for paving his own way.

Every animal in the torah taxidermied and crammed into a Brooklyn townhouse.

Where beautiful signs live on forever.