Ключевые слова: architecture, background, business, concept, conference, contemporary, corridor, covid, direction, empty, escalator, exit, fast, hall, indoors, light, lobby, lockdown, london, mall, many, mass, morning, moving, people, restriction, rush, stairs, station, success, terminal, train, train station, transport, transportation, travel, tube, tunnel, uk, uk england, unorganized, walking, walkway, way,