Acerno Cathedral is a Roman Catholic cathedral, dedicated to Saint Donatus of Arezzo. From the 11th century it was the seat of the Bishop of Acerno. The bishopric was united to the Archbishopric of Salerno in 1818 to form the Archdiocese of Salerno-Acerno, renamed in 1986 the Archdiocese of Salerno-Campagna-Acerno, in which Acerno Cathedral is a co-cathedral.
Construction of the present building began in 1575 on the ruins of an earlier church which was declared the cathedral of the diocese of Acerno in 444 by Pope Leo I. As a consequence of many earthquakes, in particular that of 1980 and the fire that followed it, the structure has undergone numerous changes. As a result of a reconstruction project in 1989 the building has been completely restored and reopened for worship.
The interior, on a Latin cross floorplan, consists of a central nave and two side-aisles, a transept, an apse and a sacristy, as well as the usual service areas. Because of the recent destruction no reliefs or decorative works are now to be seen, except for some 18th-century frescoes attributed to Leonardo Pallante and the high altar.
As for the building's exterior, the very plain west front has a principal central doorway between two smaller ones, above which are two windows to either side of a small central rose window beneath a simple Classical pediment containing an oculus. The bell tower has four storeys and terminates in an onion dome with a metal shell.
References:The Clementinum is a historic complex of buildings in Prague. Until recently the complex hosted the National, University and Technical libraries, the City Library also being located nearby on Mariánské Náměstí. The Technical library and the Municipal library have moved to the Prague National Technical Library at Technická 6 since 2009. It is currently in use as the National Library of the Czech Republic.
Its history dates from the existence of a chapel dedicated to Saint Clement in the 11th century. A Dominican monastery was founded in the medieval period, which was transformed in 1556 to a Jesuit college. In 1622 the Jesuits transferred the library of Charles University to the Klementinum, and the college was merged with the University in 1654. The Jesuits remained until 1773, when the Klementinum was established as an observatory, library, and university by the Empress Maria Theresa of Austria.