For the volcanic landforms around Krýsuvík, see also: Krýsuvík (volcanic system)
Krýsuvík (also Krísuvík, both pronounced [ˈkʰriːsʏˌviːk] in Icelandic) is an area in Southwest Iceland at about 35 km from Reykjavík.
There were farms in the vicinity from the Middle Ages till 1945. After the eruption known as the Krýsuvík fires in the middle of the 12th century, probably in 1151-1188, the main farm was transferred to a place under the mountain Bæjarfell. The name Krýsuvík was still used for the farm, though the buildings were at a distance of some kilometers from the sea. The farm had a reputation for being very rich till the end of the 19th century. Being near the sea, the farm had additional income from fishing and hunting. Commerce was also done, because the farm was a junction of old trails from the north to the south coast. Also the sulfur of the nearby geothermal areas was mined and exported. However, Krýsuvík was too far away from upcoming industry and commerce and therefore abandoned in the middle of the 20th century.
Árni Gíslason, one of the richest people in Iceland in the 19th century, lived in Krýsuvík. In 1949, a new farm (Fjósið) was constructed near the maar Grænavatn, but for many reasons, never used much as such.
As all the estate farms in Iceland, Krýsuvík had its own small proprietary church, in this case from the 13th century until 2010. The last building was a 19th century timber church built in 1857. The church was then changed into an apartment building for some time after 1927. In 1964, the mayor of Hafnarfjörður had the church renovated and used for weddings and placed under the protection of the National Museum as part of the National Museum’s Buildings Collection. It burned down in January 2010. An association was formed to build a replica, which was done by students and teachers at the technical school in Hafnarfjörður. The replica was driven to the site by truck and unloaded in 2020.