The lighthouse of Lividonia is a maritime beacon of the Tyrrhenian Sea, also known as the traffic light of Porto Santo Stefano, located in the municipal territory of Monte Argentario, west of the town of Porto Santo Stefano, at the northern end of the western coastal stretch of the promontory of the Argentario. With electric power and fixed optics, the light is produced by a 1000 W halogen lamp, with a white flash every 5 seconds of the range of 16 nautical miles. The infrastructure is also equipped with a 100W reserve LABI lamp, which comes into operation in the event of a fault or malfunction of the main one, with a range of 11 nautical miles.
The complex, dating back to 1883, was activated as a maritime semaphore by the Regia Marina for the lighting of the north-western tip of the Argentario promontory. Its current appearance was conferred by a restructuring that took place in 1926.
The infrastructure consists of an octagonal tower in white masonry with internal gallery, which rises against the central part of the front facade of a building with a rectangular plan in red brick, on two levels, with pointed arched windows. in neo-gothic style on the second floor of the building, which in the past housed the homes of the guardians before its final automation.
The top part of the tower forms the base of the tiburium of the circular metal gray lantern with a second-order Fresnel lens; an anemometer is placed at the apex of the tiburium.