The Beobachtungsbunker Schießbahn Ost is a military observation bunker located within the former Heeresversuchsanstalt Kummersdorf military testing grounds in Brandenburg, Germany. This concrete structure was part of the extensive military testing infrastructure developed during the Nazi era for weapons development and artillery testing. The bunker served as an observation post for monitoring firing tests along the eastern firing range (Schießbahn Ost).
The bunker gained historical significance at the end of World War II when local Kummersdorf civilians used it as a shelter during the Soviet advance in 1945. Today, the structure remains as part of the preserved military heritage site at Kummersdorf, which includes various testing facilities, bunkers, and technical installations from the 20th century's military history.