Later in the evening, I go online, do some searching. September is the best time of year to visit Korea. Ferries go from Fukuoka in southern Japan to Busan. Night crossings are less expensive but they're slow. There are faster ones that only take three hours. We'll book one of those. And then what? Should we stop in Busan for the night to break the journey? Or would it be better to do it all in one day? My grandparents will be tired, but I want to make the most of the time we have there. I google 'port of Busan' and images of bridges pop up. It seems there are several in the bay. The largest is shown from various angles. Ships sail beneath it. An enormous bridge. The first thing you see when you arrive from Japan by sea. It's visible from a long way off, lit up at night like a bow and arrow aimed at the moon.