An archive of ceramic eggs painted to record clowns' personal makeup designs.

The world’s largest magazine collection was born from a single shelf in a teen’s bedroom.

A rare tour of an aristocrat's private home reveals valuable 17th-century paintings from artists like Rembrandt.

The canine-themed book collection claims to be Europe's largest dog library.

Although rarely used, there is still a hidden room for the royal family at the Stockholm central station.

Tiny memorials honor individual victims of the Holocaust.

The walls of Germany's Parliament still show the scars of the Red Army takeover in World War II.

The London statue that imitates passersby.

An elegant chandelier hangs over this ancient sewer chamber, now open for concerts and public tours.

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.

This small museum in a former church crypt contains artifacts of the Elephant Man, Jack the Ripper and Florence Nightingale.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

A curious art park at the geographic center of Europe is home to 3,000 television sets and other wonders.

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

The world's most delightful not-NOT-religion welcomes visitors to the town of Templin, just like its more stoic peers.

From Iggy Pop to David Bowie to Nick Cave, this regal music studio has served some of the all time greats.

An abandoned tank sits in an empty London lot as a symbolic middle finger to local city planners.

Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.

Named after a militant urban guerilla, this famous former squat is a graffiti-covered stronghold of leftist culture.

This wildly-tiled artist's palace is a living and growing account of the creator's life, loves, and labors.

Berlin's oldest surviving academic architecture hosted decades of animal dissections.

Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

The British monarchy's stamp collection is one of the most impressive in all of Europe revealing generations of royal nerdery.

This hospital helped pave the way for treatment that drove down child-mortality rates in 19th and 20th centuries.