The remains of Poggiodiana Castle, or Misilcassino Castle, of Ribera are constituted by part of the perimeter walls and two towers, a quadrangular portion and a cylindrical, 25 meters in height and about 30 meters in circumference, of particular interest for the characteristic crowning corbels. Developed in about 3000 m² with an irregular plan, from the north side svettava on a precipice of over 300 meters, at the foot of which flows the river vegetables, east one sees the village of La Ribera. The fortress was firmly closed by an alignment of internal manufactured high approximately 20 meters and reinforced by a second defense wall. From a door on the sixth acute reached a second courtyard, where insisted the guard post with the accommodation of squires and the armoury, and opened the magazines and the scuderia. From the courtyard, thanks to the stairs, you saliva on the upper floors, where the lords were staying in the large apartments.
The castle was built in the 12th century by the Normans in defense of small neighboring communities and land between the Platani (Eraclea Minoa) and Triocala (Caltabellotta), and known until the 14th century with the name saraceno of Misilcassino, i.e. place of descent on horseback. Granted to Maletta family, from these was inherited by Scaloro degli Uberti, who made himself guilty of perfidy you saw confiscate the castle that was given to Monterosso for subsequently passes to the Chiaramonte and Guglielmo Peralta. In the fifteenth century it passed into the possession of the Counts Luna, in memory of these changed its name to take finally the appellative of Castello di Poggiodiana in honor of the noblewoman Diana Moncada, daughter of the prince of Paternò Luigi Guglielmo Moncada and wife of Vincenzo Luna.
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.