The Saint-Bonaventure church's history is intimately related to the convent of the Cordeliers whose it was a part. It was built originally in the 13th century. The current church was built in just two years between 1325 and 1327. It housed the remains of Jacques de Grolée, died on 4 May 1327, which is under the high altar, before being moved somewhere near the epistle in 1599. The church was consecrated on 18 September 1328 by the archbishop of Lyon, Pierre IV of Savoy, under the name of St. Francis of Assisi. The church was expanded from 1471 to 1484 and was then named Saint-Bonaventure.
The choir was restored in 1607. It served as a granary grain after the French Revolution before being used to worship in 1806 to getting its current facade under the Cardinal Joseph Fesch's leadership.
Around 1890, the church was cleared of the curia and buildings bordering it on its side, which allowed the expansion of the rue Grolée on its western flank.
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.