grand-ducal burial vault, peter and paul fortress in saint petersburg

ancient and architecture baroque building burial cathedral church citadel city cross culture cupola dome domed ducal duke europe exterior family fortress grand great hare heritage historical island kirillovich krepost landmark leningrad located mausoleum monarch neo neva next old orthodox paul peter peterburg petersburg petropavlovskaya place religion river romanov russia russian saint structure symbol temple the tourists travel tsar vault vladimir