The big yellow wooden house on the main square, just behind the pillory, is the Dunkejon House, named after a certain Jon Larsen, proprietor of a shop in the cellar, who in the 1860s sold liquor from iron barrels called “dunker” in Norwegian, hence the name. The house itself was built in 1784. From 1807 to 1837 the building belonged to brigade doctor Abraham Falch Simers. He had 21 children, and probably needed the whole house for his family. Since 1959 the Dunkejon House has been the property of the Fredrikstad Rotary Club. It is used for meetings, as well as banquets, weddings and other functions.