Ключевые слова: abandoned, active, amusement, beaches public garden, city, closed, corona, coronavirus, covid19, crisis, disease, distancing, down, economy, emergency, empty, epidemic, europe, flu, health, information, lock, lockdown, measurement, no people, nobody, outbreak, pandemic, park, people, playground, preventive, protection, public, quarantine, safely, safety, shut, sign, social, stop, store, street, urban, usa, virus, walk, warning,