The Chiesa del Purgatorio is dedicated to all saints and the souls in purgatory. It was first consecrated in 1658, erected under the patronage of the Mazza family. The earthquake that nearly levelled Ragusa, left this church mainly untouched, and in 1694, it took over some of the functions of the nearby church of San Giovanni, that had moved into a new district of Patro. In 1729, this church was placed under the jurisdiction of the church of San Giorgio.
A bell-tower was added in the early 18th-century. But too small for the district, in 1740, a new church was begun with a central nave and two chapels, separated by columns with Corinthian capitals (1741). The three order facade was completed in 1757, but the presbytery completed in 1787, when it underwent reconsecration.
The church is preceded by a steep staircase to a small piazza degli Archi. The chapels of the Holiest Sacrament and the Holiest Crucifix have altars respectively depicting St John the Evangelist and the Addolorata. The main altarpiece depicts Saints and Souls in Purgatory by Francesco Manno. The cornice has depictions of earthly glory interspersed with skulls as a Memento mori.
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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.