Late September is travel’s sweet spot: crisp mornings, golden afternoons, and fewer crowds. In Sweetest September, I map early color from Japan’s Tateyama Kurobe and Korea’s Seoraksan to Acadia’s ocean-view trails. In Europe, think Engadin larches, the Julian Alps, Douro harvests, Scottish Highlands wildlife, and Norway’s first auroras—curated the Exclusive Edge way.