Ключевые слова: architecture, city, clean, clear, commute, corona, coronavirus, covid19, empty, epidemic, europe, illustration, indoor, infection, infrastructure, interior, line, linie m2, lockdown, metro, mobility, modern, motion, network, pandemic, passenger, passing, people, perspective, platform, protection, public, quarantine, quarantined, railroad, railway, station, subway, train, traincar, trainset, transit, transport, transportation, travel, underground, university, urban, virus,