 The town had to be moved in 1649 to the current site, due to the post-glacial rebound that had made the bay too shallow for ships to enter.The Gammelstad Church Town is a UNESCO World Heritage Site.In 1805, Luleå only had 947 inhabitants, but in 1865 Luleå succeeded Piteå as the county town in Norrbotten county and now had around 1400 residents.