a plaque at the place of execution revolutionaries in the oreshek fortress

plaque place execution revolutionaries oreshek fortress shlisselburg saint petersburg russia august 21 2017 russian medieval defensive structure and political prison walls towers it was founded 1323 revolutionary ancient architecture brick building castle citadel city commemorative court courtyard domestic exterior fortification historic inner landmark landscape leningrad memorial monument museum old plate sculpture sovereign statue tourism tourist tower travel view wall yard