One of the world's largest amber altarpieces is housed within this reconstructed medieval church.

This Communist-era residential block is one of the longest residential building in Europe.

These rare statues are one of the few remaining material witnesses to Old Prussian culture.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

The site of the first battle of World War II.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

This Neapolitan exhibition hall grants weird and wonderful insight into the intricacies of human biology.

The skulls and bones of thousands of soldiers line the walls of this small Italian chapel.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

Perched above a grotto, this tribute to Mother Nature looks out into the ocean.

Explore the quarry where the marble was sourced for Michaelangelo's David.

The middle finger of modernity.

One of the world's heaviest musical instruments towers within a popular urban park.

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

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

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

Cold war icon and onetime "hole" in the iron curtain.

Residents of Berlin take their coffee and cake in one of the city’s most restful spaces: a cemetery.

Berlin's old airport.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

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

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