This facility not only has an interesting name (perhaps designed to avoid controversy), but also areas for tennis, roller-skating, fishing, etc. from spring into autumn. Spring is especially a good time to visit the nearby wild vegetable parks, where you can pick your own edible warabi (fern) and other plants. You can ask for information and directions at Shirakawa-so, which also offers lodging and meals for a reasonable price.
20 minutes by car from Tenoko Station
0238-77-2124 (Shirakawa-so)