Watarase Water Park

Watarase Yusuichi is a 33-square-kilometer wetland area located in Tochigi Prefecture, approximately 60 kilometers northeast of Tokyo. This expansive marsh was formed naturally by the flooding of the Watarase River and became Japan's largest wetland after centuries of sediment accumulation and changing water levels. The area gained protected status as a Ramsar Convention site in 2012, recognizing its international importance for wetland conservation.

The wetland serves as a crucial habitat for over 260 bird species and supports diverse plant communities, including rare native grasses and seasonal wildflowers. The ecosystem represents one of Japan's few remaining large-scale natural wetlands, making it scientifically significant for researchers studying wetland ecology and bird migration patterns. The area also functions as a natural flood control system for the surrounding region.

Visitors can explore the wetland through several wooden boardwalk trails that extend across the marsh, offering close access to wildlife observation points. The Watarase Yusuichi Visitor Center provides educational exhibits about local ecology and offers guided nature walks on weekends. Photography enthusiasts frequent the area for bird watching, particularly during migration seasons, while families enjoy the gentle walking paths suitable for all ages.

The park experiences distinct seasonal transformations throughout the year. Spring brings cherry blossoms along the elevated walking paths, while summer showcases lush green vegetation and active bird life. Autumn transforms the wetland into golden grasslands, creating popular photography conditions from October to November. Winter attracts migratory waterfowl and offers clear views across the marsh landscape.

The nearest access point is JR Koizumi Station on the Ryomo Line, followed by a 20-minute walk to the main visitor area. Direct bus service operates from Ashikaga Station with a 30-minute journey time. By car, the wetland is accessible via Route 354 with designated parking areas near the visitor center. Admission is free to all areas, though the visitor center charges ¥200 for adults. The park remains open year-round, with visitor center hours from 9:00 AM to 4:30 PM, closed on Mondays except during national holidays.