The Della Rovere Castle dates from 1480 to 1517 by Cardinal Domenico della Rovere and represents a rare example of Renaissance architecture in Piemonte. The magnificent cloister dated 1513/1515, with its terracotta features and the recently discovered 16th century frescoes by the school of Pinturicchio, are particularly significant. In 1776 it becomes the headquarters of the Royal Porcelain Manufactory, strongly backed by Victor Amadeus III of Sardinia.The castle is combined with a vast park featuring an artificial lake and the auspicious statue of the Sower.
In 1839 the castle was purchased by the brothers Giacomo and Luigi Rey, who restored it and enriched it with frescoes made by Rodolfo Morgari. Towards the end of 1973, the building was purchased by the Municipality of Vinovo. Currently, it houses the Municipal Library and St. John International University.
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.