Ключевые слова: abstract, active, activity, adult, alexanderplatz, arena, background, berlin, cheerful, christmas, cold, crowd, day, entertainment, exercise, feet, fun, germany, happiness, happy, healthy, holiday, ice, joy, leisure, lifestyle, motion, new, outdoor, outside, park, pastime, people, play, popular, recreation, ride, rink, season, skate, skater, skating, snow, sport, sunny, vacation, winter, xmas, year,