sculpture of commander friedrich von zollern on the friedland gate, 19th century. kaliningrad, before konigsberg, russia

ancient arch architectural architecture attraction baltic bastion brick burnt buttress casemate construction defense europe figured fort fortification friedland friedrich gate german gothic historical history kaliningrad kenigsberg koenigsberg komtur konigsberg landmark loopholes master neo parapet portal prussia red russia sculpture sight sightseeing statue strengthening teeth tourism towers travelling wall zollern