Trento Cathedral (Duomo di Trento) was built in 1212 over a pre-existing 6th-century church devoted to Saint Vigilius, patron saint of the city. Bishop Federico Wanga commissioned the architect Adamo d'Arogno to construct the new Lombard-Romanesque church. Works continued for more than a hundred years, with the Gothic style becoming increasingly evident.
The façade has a large rose window including The Wheel of Fortune. Notable also are the lions supporting the columns of the narthex on the northern side and the twisting columns in the apsidal area.
The interior has a nave and two aisles with a transept. The latter has 14th-century frescoes depicting the legend of Saint Julian and the stone statue of the Madonna degli Annegati. The apse of the right transept houses the relics of the local martyrs Sisinius, Marturius and Alexander who died around 397 AD. In the right aisle is the Crucifix Chapel (1682), with a wooden crucifix at the feet of which were promulgated the issues of the Council of Trent, whose sessions were held in the church's presbytery. Painter Ludovico Dorigny also contributed works to the cathedral.
References:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.