Stegeborg Castle

The fortress remains include a square brick tower in the southeast corner and a round tower in the west, connected by defensive walls.

Built in the early 13th century, Stegeborg Castle expanded during the 16th century under King John III of Sweden's reign with additional fortifications.

The castle's name derives from stæk, referring to wooden poles placed in water to control maritime traffic through the narrow sound.

The ruins stand on an island in Slätbaken bay, offering visitors access to both architectural remnants and maritime archaeological features.

The castle's underwater defense system used submerged pilings to block ships, making it a strategic point for controlling regional waterways.

Location: Söderköping Municipality

Website: http://www.stegeborg.se/slottsruin.php

Website: http://stegeborg.se/slottsruin.php

GPS coordinates: 58.44156,16.59814

Latest update: May 17, 2025 17:55