 During the Nazi era, headed by Hugo Spatz and Julius Hallervorden from 1937/38, it played a vital role in eugenics and racist research, and also in the "Aktion T4" "euthanasia" program.From 1949 to 1990 Buch was part of East Berlin.The locality is served by the urban rail line S2, part of the "S-Bahn", at the station of Buch.