Oze Marshland National Park
Oze is Japan's largest high-altitude wetland โ a vast plateau of marshes, ponds, and bog straddling the Fukushima-Gunma border at 1,400 metres, and one of Japan's most celebrated hiking destinations. In late May and June, the marshes explode with white mizubasho (Asian skunk cabbage) blooms and yellow nikko-kisuge lilies, creating a carpet of colour across the boardwalk trails. The full loop takes 4โ6 hours through pristine subalpine scenery.