From 1890 until today, at Cape Armenistis operates the namesake lighthouse which for decades has been inextricably linked with the history of the island. It is located along the road to Agios Stefanos and because of it the surrounding area has been named Fanari (Lantern).
It was built after the sinking of a steamboat named Volta in 1887, on the rocks of the island. Two years later, at the International Exhibition of Paris, Sautter-Lemmonier presented an original and impressive strobe mechanism which was awarded for its innovation. This exact mechanism was later placed in Armenistis' Lighthouse! Today you can admire it at the Aegean Maritime Museum which is located in Chora.During World War II, it was used as an observation post by the Germans. Until 1984 when it was automated, it was the most unique and beautiful lighthouse in the Cyclades. You should definitely come up here to enjoy the splendid view, as well as the mysterious romantic aura that surrounds it.