decorative stone gate

admiralty ancient architecture attraction baroque bastion blue building castle cathedral citadel city classic column culture defense entrance europe european facade famous fort fortification fortress gate granite historic history island landmark landscape leningrad medieval museum neva old outwall palace paul peter peterburg petersburg petropavlovskaya place river rock russia russian safe saint saintpetersburg sanktpeterburg scene sightseeing sky soviet stone stronghold style tourism tourist tower town traditional travel trip urban view wall war water