Ключевые слова: 27, alexander, april, architecture, birthday, blue, building, celebrate, city, colorful, day, decorated, dutch, europe, flag, flags, flagstick, heusden, holiday, holland, house, king, kings, koning, landmark, national, netherlands, old, orange, orangenassau, outdoor, party, red, royal, sky, spring, street, symbol, tourism, town, tradition, traditional, travel, urban, white, willem, willemalexander,