Kajaani Castle
Kainuu
Kajaani Castle, located on an islet in the Kajaani River between the Ämmäkoski and Koivukoski rapids, is a ruined granite fortress originally constructed in the early 1600s. Commissioned by King Charles IX of Sweden, it was strategically built to protect the newly Swedish-controlled Kainuu region after the Treaty of Teusina in 1595. The castle's construction began in 1604 but was slow and interrupted by royal orders, with its initial use as a prison. During the mid-17th century under Count Per Brahe the Younger, the castle reached its peak, with the nearby town of Kajaani founded in 1651 and plans to transform the fortress into a noble residence. However, the fief was abolished in 1681, and the castle reverted to a simple administrative and military center. Its military importance ended after the Russian destruction during the Great Northern War in 1716, when it was besieged and blown up. Today, only roofless ruins remain, which have been restored several times since archaeological interest awakened in the 1930s. Kajaani Castle stands as the northernmost medieval-style stone castle built in Sweden and remains a significant cultural and historical symbol in Finland.
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Tip: The best time to visit Kajaani Castle is during the summer months when the weather is favorable for exploring the outdoor ruins and the surrounding river landscape. Visitors are advised to check opening hours and consider purchasing tickets in advance to avoid queues, especially during peak tourist season. The site offers discounts for groups, students, and seniors. Comfortable walking shoes are recommended due to uneven terrain on the islet. Guided tours may provide deeper historical insights and enhance the experience.
Interesting facts
- •Kajaani Castle was the northernmost stone castle built in Europe at the time of its construction.
- •The castle served as a prison and held notable prisoners, including the Jesuit professor Johannes Messenius for nearly 20 years.
- •The castle was destroyed by Russian forces with explosives during the Great Northern War in 1716.
- •The nearby town of Kajaani was founded in 1651 next to the castle by Count Per Brahe the Younger.
- •Restoration works in the 1930s replaced earlier brick repairs with granite to preserve the castle's authenticity.
History
Construction of Kajaani Castle began in 1604 by order of King Charles IX of Sweden to secure the Kainuu region ceded to Sweden in 1595.
The castle was built on a small islet, which had to be enlarged to support the fortress.
Construction was slow due to labor and material shortages and was halted by King Gustav II Adolf in 1619.
Initially used as a prison, the castle flourished under Count Per Brahe the Younger in the mid-1600s, who enhanced it into a noble residence and founded the adjacent town of Kajaani in 1651.
The fief was abolished in 1681, and the castle returned to administrative use.
It was destroyed by Russian forces during the Great Northern War in 1716 and lost military relevance when Finland became part of the Russian Empire in 1809.
Archaeological interest revived in the 1930s, leading to restoration efforts.
Place Guide
Main Ruins and Fortifications17th century
The roofless granite ruins of Kajaani Castle showcase the original rectangular layout with semi-circular gun towers at each end. Visitors can explore the surviving walls that rise directly from the rapids, revealing the castle's defensive design and strategic river location.
Islet and Surrounding Rapids17th century
The castle is situated on a small islet in the Kajaani River, between the Ämmäkoski and Koivukoski rapids. The islet was artificially enlarged during construction to support the fortress. The surrounding rapids provided natural defense and controlled a key crossing point over the river.
Contact
Phone: 020 6396380
