Ключевые слова: architecture, attraction, beautiful, boat, building, center, city, cityscape, cloud, cloudy, coronavirus, crisis, cruise, cultural, empty, epidemic, global, history, horizontal, infection, island, journey, landscape, meteor, nautical, neva, neva river, no people, pandemic, paul, paul fortress, peter, petersburg, quarantine, river, russia, saint, ship, sky, st petersburg, summer, tourist, travel, virus, visit, waterfront,