This is where you come to get that picture of yourself with one foot in Honsh? and the other in Ky?sh?. For the 780m submarine walk to Ky?sh?, take the bus from the station to the Mimosus?gawa bus stop (¥260, 12 minutes) and take the lifts there to the tunnel.
Within this park, there's not much of the old Hagi-jō to see, apart from the typically imposing outer walls and the surrounding carp-filled moat. The castle was built in 1604 and dismantled in 1874 following the Meiji Restoration. But the inner grounds are a pleasant park, with spring cherry blossoms, the Shizuki-yama-jinja , the Hanano-e Tea House from the mid-19th century and other buildings. Asa Mōri House is a nagaya (Japanese long house). From the castle ruins you can climb the hillside to the 143m peak of Shizuki-yama.
A highlight of a trip to Shimonoseki is an early-morning visit to the Karato fish market. It's a great opportunity to try sashimi for breakfast or lunch, and the fish doesn't get any fresher – a fair bit of it will still be moving. The best days to come are Friday to Sunday, when stallholders set up tables selling bent? of sashimi and cooked dishes made from the day's catch. Note that the market is closed on some Wednesdays. You can take away meals or eat at the counters on the mezzanine level. Buses to Karato (¥220) leave from outside the station and take about seven minutes.