In the 14th and 15th centuries, there was already a busy port and a small village on the Otra at the lowest point of today's Lund neighbourhood (Lahelle). Another important element in the development of Kristiansand was the harbor on the island of Flekkerøy, which was the most important on the Skagerrak beginning in the 16th century and was first fortified under King Christian III in 1555. In 1635, King Christian IV ordered his feudal seigneur, Palle Rosenkrantz, to move from Nedenes and build a royal palace on the island.