Lysekil (Swedish pronunciation: [ˈlŷːsɛˌɕiːl]) is a locality and the seat of Lysekil Municipality in Västra Götaland County, Sweden. It had about 7,600 inhabitants in 2018. Situated on the south tip of Stångenäs peninsula at the mouth of Gullmarn fjord, it has two nature reserves.
Originally a small fishing village, it developed into a town for fishing industries, commercial shipping and trade during the 18th and 19th centuries. Stone industry based on the red Bohus granite from quarries in the town, was also vital to Lysekil up until the 1950s. One of Sweden's largest oil refineries, Preemraff Lysekil is situated outside the town.
During the 19th century, Lysekil was established as a prominent spa and bathing resort and tourism still makes up a large part of the town's economy.
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