Tjärven lighthouse, Maritime lighthouse in Norrtälje Municipality, Sweden
Tjärven is a lighthouse on the Baltic Sea coast featuring a cylindrical concrete tower approximately 13 meters tall. The structure has a balcony and lantern room, painted white with a grey base.
Construction of this lighthouse began in 1902, replacing a day beacon that had guided ships through these waters since the 19th century. This change marked the transition to permanent navigation aids in the region.
The structure shows how Swedish maritime technology changed over time. The shift from kerosene lamps to solar power systems reflects the technological advances that shaped navigation along this coast.
The lighthouse emits a white light signal visible from considerable distances, serving as a navigation aid for shipping routes in the region. Visitors should know that access may be limited and the surrounding area is shaped by active maritime traffic.
The waters surrounding the lighthouse contain unexploded Russian mines from World War I. This historical hazard makes diving and anchoring near the site extremely dangerous and represents a hidden legacy of the war in these waters.
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