As the summer heat gives way to crisp autumn air, travelers across Korea are preparing for one of the country's most cherished seasonal rituals: chasing the transformation of fall foliage. To help nature enthusiasts time their journeys, the Korea Tourism Organization (KTO), in partnership with the Korea National Arboretum, released the official 2026 Autumn Leaves Map, offering precise peak foliage timelines and a curated list of 36 top destinations nationwide. According to this year's forecast, the northern regions — including the Seoul metropolitan area and Gangwon Province — will see peak colors beginning in late October. Further south, regions like Gyeongsang and Jeolla will hit their colorful high point between early and mid-November. What makes this year's map particularly noteworthy is the tech-forward, crowdsourced data behind the predictions. Rather than relying solely on traditional climate models, the forecasts leverage real-time observations from the National Arboretum’s Plant Phenology Project. A network of 829 citizen scientists contributed ground-level field data to