The Sacro Monte di Ossuccio is one of the nine sacri monti ('Sacred Mountains' of Piedmont and Lombardy, series of nine calvaries or groups of chapels and other architectural features ) in the Italian regions of Lombardy and Piedmont, in northern Italy, which were inscribed on the UNESCO list of World Heritage Sites in 2003.
The devotional complex is located on a prealpine crag some 200 metres above the western shore Lake Como, facing Isola Comacina and some 25 km from the city of Como. Surrounded by olive groves and woodland, it is quite isolated from other buildings. The fourteen chapels, constructed between 1635 and 1710 in the typical Baroque style reflecting the Counter Reformation ethos of the sacri monti movement, are joined by a path which leads up to a pre-existing sanctuary of 1532 placed on the summit and dedicated to La Beata Vergine del Soccorso.References:
The Petersberg Citadel is one of the largest extant early-modern citadels in Europe and covers the whole north-western part of the Erfurt city centre. It was built after 1665 on Petersberg hill and was in military use until 1963. It dates from a time when Erfurt was ruled by the Electors of Mainz and is a unique example of the European style of fortress construction. Beneath the citadel is an underground maze of passageways that can be visited on guided tours organised by Erfurt Tourist Office.
The citadel was originally built on the site of a medieval Benedictine Monastery and the earliest parts of the complex date from the 12th century. Erfurt has also been ruled by Sweden, Prussia, Napoleon, the German Empire, the Nazis, and post-World War II Soviet occupying forces, and it was part of the German Democratic Republic (East Germany). All of these regimes used Petersberg Citadel and had an influence on its development. The baroque fortress was in military use until 1963. Since German reunification in 1990, the citadel has undergone significant restoration and it is now open to the public as a historic site.