A modern-day cabinet of curiosities housed in a 300-year-old inn.

Hidden out of public view in the National Library of Israel is a collection of "Stalag's," 1960s Nazi themed porno paperbacks written and consumed by Israelis.

Sitting right on the border between East and West Jerusalem this modern art museum is in itself a symbol of Israel's hoped-for unity.

This memorial honors thousands of enslaved Africans and their descendants who died in colonial New York.

A ruthless Soviet relocation campaign birthed a new cuisine, and this humble restaurant.

This enormous banquet-themed artwork honors over 1,000 notable women throughout history.

Here, exhibits come with a side of edible history.

This speakeasy continues the Prohibition-era legacy of Harlem's jazzy Swing Street.

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

This small New York museum examines Chinese history from its origins right up to its arrival in the city.

The world's largest collection of materials relating to lesbian history is housed in a Brooklyn townhouse.

This interactive gallery makes you feel like you've stepped into a fantasy world filled with whimsical monsters.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

A living archive of urban activism and space reclaimed.

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

This former Norwegian sailor's church is slowly being taken over by ramshackle robot musicians.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

A semi-scholarly approach to sex.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

You can take a class, browse the library, or visit the lavish lair of an international men's humor society.

Fall down the rabbit hole into a surreal journey of human consciousness "from ass to soul."

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

A hidden art gallery in an abandoned Warsaw fort.

A program of Communist glamour in post-Stalin Poland is preserved in this colorful museum.