När Lighthouse

När Lighthouse is a Swedish lighthouse located outside the village När on the southeast side of the island Gotland. It was constructed in 1872, the sketchings were made by architect John Höjer. It is located in a nature reserve and birding area. It is a listed building in Sweden.

The light originally carried a kerosene lamp and it was updated with electric power in 1961. It was also automated that same year, and the rotating lens was replaced by a modern one. It is owned by the Swedish Maritime Administration.