First project that I am going to present out Berlin is the Holocaust Memorial by architect Peter Eisenman.
The Memorial to the Murdered Jews of Europe, also known as the Holocaust Memorial, is a memorial in Berlin dedicated to the Jewish victims of the Holocaust. The memorial is designed by the architect Peter Eisenman and engineer Buro Happold.
This memorial is comosed of 2,711 free- standing pillars of stone, each measuring 95 x 237.5 centimeters with heights varying from zero to 400 cm. Visitors can enter from all four sides, day or night, and wander on their own through the maze of stones, as though visiting a graveyard with nameless tombstones. The columns are sunk into the ground to various depths and at some places, they are higher than the heads of the visitors.
More pictures? click here
Official website : http://www.holocaust-mahnmal.de/
archiDE 
this is a good thing to have for all the people who died and its sad how many graves there in justone lace. it marks a horrible event but only to help others move on.