The islet of Loreto is situated north of Monte Isola, opposite Carzano. It is a private island which has been inhabited for centuries. Gabriele Rosa noticed “ruins of walls and two square towers”, remains of ancient fortifications. At the end of the 15th century. the islet was taken over by the Santa Chiara Sisters of the Convent of Brescia, who decided to build a convent. In 1910 a Neo-Gothic castle, with a small harbour, two towers and a surrounding conifer park, had already been built by Sir Vincenzo Richieri. The castle stands on a cliff falling sheer to the lake. The tower, battlements and light-coloured stone walls make it very picturesque.
References:Ehrenbreitstein Fortress was built as the backbone of the regional fortification system, Festung Koblenz, by Prussia between 1817 and 1832 and guarded the middle Rhine region, an area that had been invaded by French troops repeatedly before. The fortress was never attacked.
Early fortifications at the site can be dated back to about 1000 BC. At about AD 1000 Ehrenbert erected a castle. The Archbishops of Trier expanded it with a supporting castle Burg Helferstein and guarded the Holy Tunic in it from 1657 to 1794. Successive Archbishops used the castle's strategic importance to barter between contending powers; thus in 1672 at the outset of war between France and Germany the Archbishop refused requests both from the envoys of Louis XIV and from Brandenburg's Ambassador, Christoph Caspar von Blumenthal, to permit the passage of troops across the Rhine.