Stenberga Castle, Medieval castle ruins in Masku, Finland.
Stenberga Castle features two stone towers with walls reaching 2 meters in thickness, constructed on a steep rocky elevation near Hirvijoki River.
First documented in 1398 under Turku Castle bailiff ownership, the castle materials were later repurposed for constructing the Bridgettine monastery in Naantali during 1430s.
The castle ruins represent an important archaeological site that provides insights into medieval Finnish military architecture and construction methods.
The castle ruins stand on private property, requiring advance permission from landowners before attempting the steep climb to access the site.
Post-glacial land uplift has moved the castle location from its original island position to nearly 2 kilometers inland from the current coastline.
Location: Masku
GPS coordinates: 60.53472,22.00528
Latest update: March 3, 2025 08:56
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