Kalmar

The coast here has been settled since ancient times: Stone Age grave fields have been found, and the oldest evidence of a town dates from the 11th century. Kalmar's city seal, from between 1255 and 1267, is the oldest known in Scandinavia. A round watchtower and a harbour were built on the strait in the 12th century, and at the end of the 13th Magnus Ladulås surrounded the tower with a fortress. Close to the Danish border, with its harbour and trade, Kalmar was one of Sweden's most important towns from the 13th to the 17th century. In 1397 Queen Margaret gathered the leaders of the three kingdoms at the castle, and on 13 July the Kalmar Union was agreed, joining Denmark, Norway and Sweden until 1523.

The border also brought violence. Two massacres are both known as the Kalmar Bloodbath: in 1505 King John had the mayor and council executed, and in 1599 Duke Charles executed the castle's commanders after a siege. Gustav Vasa and his sons turned the fortress into a Renaissance palace from the 1540s. The town became a diocese in 1603, was badly damaged in the Kalmar War of 1611–13, and was besieged 22 times in all without the castle ever being taken. In the mid-17th century the town was rebuilt on the island of Kvarnholmen, where Tessin's cathedral was begun in 1660.

After the Treaty of Roskilde moved the border south in 1658, and Karlskrona became the main naval base, Kalmar's importance declined and the castle fell into disrepair; its restoration ran from 1856 until 1941. Industry arrived in the 19th century, but the engineering works, the shipyard and a Volvo car plant all closed between 1981 and 2005.

The castle is the city's emblem, and its history runs through local identity. It was the setting of the union of 1397, and the ship that carried Swedish settlers to found New Sweden in North America in 1638 was named Kalmar Nyckel, the Key of Kalmar, in tribute to the castle known as the key to the kingdom. Restored over nearly a century, it now opens its rooms to visitors and stages a summer programme for children, who play princes and princesses solving puzzles in the castle.

The baroque centre on Kvarnholmen is a piece of 17th-century planning, with the cathedral and town hall facing each other across Stortorget. The square itself became a modern landmark when it was redesigned by the British architects Caruso St John with the artist Eva Löfdahl as a single stone floor with water running beneath it; it was declared a historic monument in 2002 and won several architecture awards after its completion in 2003.

Football is the city's great sporting passion. Kalmar FF plays at the 12,000-seat Guldfågeln Arena, opened in 2011, and the club won promotion to the top division, Allsvenskan, in 2025. The Kronan excavations, carried out by the county museum every year since the wreck was found in 1980, give Kalmar a strong link with maritime archaeology.

About 42,600 people lived in the central town in 2023, and about 72,000 in the municipality. Kalmar is the capital of Kalmar County and the third-largest urban area in Småland. The bridge to Öland makes it the mainland gateway to the island.

The city's economy has moved from heavy industry to services and education. Kalmar Verkstad, which built steam engines and trains, closed in 2005; the shipyard founded in 1679 closed in 1981; and the Volvo car plant that opened in 1974 shut in 1994, part of a loss of around 2,000 industrial jobs. Linnaeus University has one of its two campuses here, including the Kalmar Maritime Academy, and there is a research centre for Telia.

Kalmar has also made a name for cutting fossil fuel use: a wood pulp plant supplies district heating and power, cycle lanes are common, the city has a public biogas pump, and new buildings must meet insulation rules. The centre on Kvarnholmen is small enough to cross on foot, with the station a few blocks from the main square.

Kalmar sits between Småland and Öland, each with its own dishes. From Småland comes ostkaka, a curd cake usually eaten lukewarm with jam, berries or fruit sauce and cream or vanilla ice cream; it is not to be confused with cheesecake, which Swedes call by its English name. From Öland, just across the bridge, and from Småland comes the kroppkaka, a boiled potato dumpling most often filled with pork and onion and served with melted butter, lingonberry jam or cream. The two provinces make them differently: on Öland mostly from raw potato, in Småland mostly from boiled. Ostkaka, too, is known across Sweden, and ready-baked versions are sold in grocery stores, but it is in Småland and Hälsingland that it is most popular.

The centre's restaurants and cafés cluster on Kvarnholmen, around Stortorget, Larmtorget and the streets between them, with Swedish cooking alongside Asian kitchens and takeaways, and coffee shops in old buildings and garden settings. Hansa City, by the E22, is the main out-of-town shopping area.