Ruotsinsalmi sea Fortress

The fortress complex spans multiple islands near Kotka, featuring Fort Katarina, Fort Elisabeth, and Fort Slava with strategic positions along the coastline.

Construction of the fortress began in 1791 as part of Russia's defensive system to protect Saint Petersburg following the Russo-Swedish War of 1788-1790.

The fortress represents Finnish military architecture and includes a 24-meter lighthouse tower built in 1798, marking Finland's second constructed lighthouse.

Visitors can explore the remaining stone structures on several islands, with Fort Slava containing 44 preserved gun stations from the original fortification.

The fortress incorporated underwater barriers between straits to control marine traffic, demonstrating advanced maritime defense techniques of the 18th century.

Location: Kotka

Part of: South-Eastern Finland fortification system

GPS coordinates: 60.44167,26.97111

Latest update: March 9, 2025 01:19