POTSDAM, GERMANY - JUNE 01, 2000: The Einstein Turm astrophysical observatory designed by architect Erich Mendelsohn in 1917 for Albert Einstein Poster #876200698
POTSDAM, GERMANY - JUNE 01, 2000: The Einstein Turm astrophysical observatory designed by architect Erich Mendelsohn in 1917 for Albert Einstein Poster #876200698