Nidingen

Nidingen is a Swedish Kattegat sea area skerry with a lighthouse station. It is located in Onsala parish in Kungsbacka Municipality in the province (landskap) of Halland. The island has with its surrounding reefs always posed a danger to shipping. The three lighthouses on the island, one of which is active, are today protected as heritage buildings. The island is also a nature reserve with a birding station and hostel, famous for large populations of different bird species.

The province of Halland and Nidingen was ruled by Denmark until the Second Treaty of Brömsebro 1645. The Danes had lit primitive navigation fires on the island before, and also built a "vippefyr", but now it became one of Sweden's earliest light stations. In the 18th century, the vippefyr was replaced by fires placed on stone cairns, which in turn were replaced by two new stone towers in 1834. They were built even higher in 1847 and were equipped with lanterns and fresnel lenses. In 1884, the colza oil lamps were replaced by kerosene lamps with improved luminosity. The historic lighthouses was in use until 1946 when a new modern tower was completed. The lighthouse was electrified through a connection with cable from the mainland.