Sjundby Manor is a remarkable stone structure completed in the 1560s at the rapids of Siuntio River, representing one of Finland's finest medieval stone buildings. Built by Jakob Henriksson, the master of horses to King Gustav I of Sweden, the manor features defensive construction with thick stone walls and medieval cellars, reflecting its historical role as a fortified residence. The estate has been owned by the Adlercreutz family since the 18th century and retains significant architectural features including an observation tower added in 1892. Still in private possession, the manor welcomes visitors and offers glimpses into centuries of Nordic noble family heritage and craftsmanship, with its well-preserved stone construction demonstrating the enduring quality of 16th-century Finnish architecture.
