Ключевые слова: abstract, architecture, art, beautiful, blue, bridge, building, canal, car, city, cityscape, culture, drawn, europe, european, famous, green, hand, historic, historical, history, holland, house, illustration, landmark, landscape, leiden, line, netherlands, old, park, people, river, sketch, sky, south, splash, street, tourism, tower, town, travel, tree, urban, view, watercolor, work,