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

A monument to the man who almost killed Hitler.

There might not be much left of these Irish ruins, but their linguistic legacy is still going strong.

Ireland's only German military cemetery holds the remains of a spy who was moved there under the cover of darkness.

Tiny memorials honor individual victims of the Holocaust.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

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

A slice of central Asia in the middle of Berlin.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

The most visited, and possibly most controversial, museum in Germany.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

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

A fascinating insight into daily life in the Eastern Bloc.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

A nun spent 16 years painting the stunning Celtic mural that covers the interior of this WWI memorial.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

Some of the saint's blood and bones are said to reside in Dublin.

"The most colorful grottoes of the world.

A unique hanging cable-car navigates through Dresden, the oldest suspension railway in the world.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.