Walking about 10min from Kurashiki station, you'll find a preserved area of the old city of Kurashiki.
There's a small river running between the middle of the city where you can take a ride on a classical wooden boat, observing historical buildings on both sides.
This is a picture of the old city of Kurashiki I took at dawn, before tourist started coming.
(Love the mirroring effect of the city in undisturbed water!)
Also at the entrance of the area, there's a store where you can experience cooking a famous Okayama snack called 'Mura suzume'.
If you like walking around historical places in Japan, Kurashiki is one place I would recommend people to go.