Saikaibashi Park is a lovely place to take a breather. Enjoy a picnic, kick a ball around or just lie on the soft grass and close your eyes for a while.
You'll soon find out why this Saikai recreation and green space is popular with travelers. If you're searching for more to explore, Nagasaki Bio Park, Shinsaikai Bridge, and Nanatsugama Limestone Cave are in this area as well. They won't take very long to reach from Saikaibashi Park.