Ключевые слова: 100 days, advertising, architecture, asia, athletic, building, city, clock, count, countdown, crowd, display, electronic, events, games, installation, japan, japanese, lamp, marketing, marunouchi, marunouchi plaza, official, olympic, olympics, omega, people, plaza, promotion, railway, sightseeing, sign, skyscrapers, sponsor, sport, station, symbol, timeleeper, timer, tokyo, tokyo olympics games 2020, tokyo station, tourists, train, transportation, travel, travelers, urban, walking,