21 Century forest Skatepark
If you don't have a car, you can use train. 2.7Km to 21 Century forest Skatepark from JR Jyoubansen Yumoto station but This park is located at hill so it might have taken a much time to go there.
For free to use
Need to register (Although I didn't do that before , I can use it. Anyway, I could'nt find office. Maybe it's ok...)
There are Box, Manual pad, Bank, Bowl, Ramp, Bank to bank, Down rail, 4 Stair.