Iso Linnamäki, Medieval hillfort in Porvoo, Finland
The remains of Linnamäki Castle stand on a strategic hill offering views across the Porvoo river valley and surrounding medieval district.
Archaeological excavations between 2007 and 2009 revealed similarities with Landskrona Castle, indicating Swedish construction around 1300 during eastern territorial expansion.
Information boards throughout the castle grounds detail the evolution of Finnish defensive structures from the Middle Ages through the Great Northern War.
The archaeological site remains accessible year-round without admission fees, though winter visitors should note the absence of snow maintenance on paths.
Crossbow bolts, medieval knives, pliers, and stone clay pot fragments discovered at the site confirm its military and residential functions during the 13th century.
Location: Porvoo
Part of: Old Porvoo
GPS coordinates: 60.39975,25.65220
Latest update: March 9, 2025 23:36
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