The Santa Margherita Ligure fortress is located at the foot of a hill on which the Villa Durazzo-Centurione now stands. It was built following a resolution by the Senate of the Republic of Genoa in 1550, and it was meant to defend against raids from the Barbary pirates. It was designed by Antonio de Càrabo, who was also responsible for the construction of the Castello di Rapallo.
Construction began in 1550 and it was completed by September of the same year. Various structural interventions and armament upgrades took place until the early 17th century. After pirate attacks ceased in the 18th century, the fort lost its military importance and only some repair and maintenance works were undertaken.
In the 19th century, there were plans to demolish the building twice: first to build a new municipal building after Rapallo was established as an independent municipality, and then to enlarge the adjacent Calata Vittorio Emanuele. It was restored after World War I and it was dedicated in the memory of the fallen in that war.
References:Towering 52 meters above the sea, Bengtskär lighthouse is the tallest one in Scandinavia. The building started in in 1905 after the shipwreck of S/S Helsingfors and was completed in 1906. The lighthouse was designed by architect Florentin Granholm. On December a special petrol lantern, designed and built in Paris, was brought to Bengtskär and installed atop the tower.
German fleet bombarded Bengstkär in the First World War in 1914. Since the Gulf of Finland was heavily mined, it was not until 1919 that the surrounding seas were declared safe for shipping, that the light was lit again.
After the war the military value of Bengtskär increased as part of the defence system of independent Finland. In Second World War (1941) Soviet Union made a suprise attack to island. After a bloody battle, the small Finnish garrison emerged victorious. Intermittent repairs to the facility continued during the post-war period.