Gustavsvärnn, Lighthouse and fortification complex on an islet near Hanko, Finland.
The 10-meter concrete lighthouse marks the entrance to East Bay, emitting white, red, and green flashes every ten seconds for maritime navigation.
Swedish forces constructed the fortification in 1789 using local red granite, but Russian troops destroyed the structure during the Crimean War in 1854.
The site represents Finnish coastal defense architecture and maritime heritage, now protected under the Antiquities Act as a registered archaeological monument.
The lighthouse operates continuously through submarine power cables, providing navigational guidance with a range of 12.4 nautical miles for vessels approaching Finland.
The fortress ruins and lighthouse form part of Hankoniemen sotahistorian kohteet, revealing centuries of military presence through visible quarrying marks in the granite.
Location: Hanko
Inception: 1951
Height: 10 m
Part of: Hankoniemen sotahistorian kohteet
GPS coordinates: 59.80095,22.94357
Latest update: March 29, 2025 00:16
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