Finland · 14th century
Kastelholm Castle (Swedish: Kastelholms slott, Finnish: Kastelholman linna) is a medieval castle built by the Swedes in the late 14th century. It is located near Road 2 in the municipality of Sund in Åland, Finland, about 25 kilometres (16 mi) northeast of Mariehamn, overlooking a fjord near the village of Kastelholm.
Kastelholm is one of five surviving medieval castles in Finland considered architecturally significant, along with Hämeenlinna, Olavinlinna, Raseborg, and Turku. Originally built on a small island surrounded by water-filled moats, it served both military and administrative functions. In the 15th and 16th centuries, it was an important stronghold held by nobles, feudal lords, and kings.
Damaged during the 1599 civil war and later gutted by fire in 1745, the castle fell into ruin but was partially restored in the 20th century. Since the 1990s, it has been a museum and a key cultural site in Åland.
Text adapted from “Kastelholm Castle” on Wikipedia, CC BY-SA 4.0.
Kastelholm Castle ranks #726 of 9,079 worldwide in the atlas's castle fame ranking, and #6 of the 27 mapped in Finland. Founded c. 1400, it is older than 50% of the atlas's dated landmarks — one of 755 atlas entries founded in the 14th century. Its Wikipedia articles were opened 7,702 times in the last 60 days, more than 91% of the atlas. 1 more atlas landmarks stand within 25 km. See how Finland compares in the castle statistics.
View on the interactive castle map →