Drop by Tsushima-city Tourist Association for some useful tips before you set out exploring. It's an one-stop shop for tourist information.
This tourist information center in Tsushima comes recommended by travelers, so make a spot for it on your to-do list. Don't think that's all there is to do here, though. There are loads more places ready for you to discover after Tsushima-city Tourist Association. Tsushima City Office, Banshoin Temple, and Tsushima Folk History Museum are close by.