Berlin Memorial

The memorial was designed by the Danish-Norweigan artistic duo Michael Elmgreen and Ingar Dragset.
via International Herald Tribune:

Memorial for Gay Victims of Nazi Persecution Dedicated in Berlin
The memorial consists of a grey rectangular block some four meters (13 feet) tall. One side has a small opening through which viewers will see a black and white art film scene of two men kissing. "A simple kiss could land you in trouble," says the text which accompanies the memorial.

The memorial has a prominent place in Berlin's Tiergarten park, half a block from Brandenburg Gate. The monument sits across from the Jewish Holocaust Memorial. Originally it was debated whether homosexuals should be included in the larger memorial before the decision was made to give homosexuals their own monument. But the design corresponds to the Holocaust Memorial's field of steles, a series of concrete blocks of varying sizes. While the Nazi persecution of the Jews is well known, for many years there was little public acknowledgement of Nazi atrocities towards homosexuals. Estimates put the number of homosexuals arrested by Nazis at about 54,000 with 7,000 being killed in concentration camps.