Thank you for your inquiry, Shiro-san. So this is how you can get to Ikutopia Park. From Niigata station, you can walk for about 2 minutes by going to Niigata Eki Minamiguchi. Take a bus and get off at the Big Swan Mae Bus Stop. From there, you can take a walk for about 11 minutes by going to Ikutopia Park. This is the fastest way to get to the park as it will only take you more or less 25 minutes. On the other side, you can take a walk from Niigata station going to the park however it will take you more than an hour of walking.