Ключевые слова: 15th century, ancient, architecture, attraction, bastion, billboard, blue, brick, building, castle, castle sforzesco, church, city, duke, fort, fortress, grass, heritage, historic, historical, history, italian, italy, italy travel, kingdom, landmark, landscape, lombardy, medieval, milan, monument, museum, old, sforza castle, sforzesco, sky, spring, stone, strengthening, style, summer, symbol, tourism, tower, town, travel, urban, wall,