The Castello Baradello is a military fortification located on a 430 m high hill next to the city of Como. The castle occupies the ancient site of Comum Oppidum, the original settlement of Como, dating from the 1st millennium BC. Later it was one of the last Byzantine strongholds in the area, surrendering to the Lombards in 588. The castle was restored during the War of the Lombard League, with the help of emperor Frederick Barbarossa (1158). Barbarossa officially donated it to the citizens of Como in 1178.
Napoleone della Torre died here in 1278, having been imprisoned here by Ottone Visconti after the Battle of Desio; his nephew Guido was able to escape in 1283, as well as his brothers Corrado and Enrico the following year. Azzone Visconti restored and enlarged the fortification after conquering Como in 1335, and built another castle, the Castello della Torre Rotonda ('Castle of the Round Tower', now lost) and a citadel.
In 1527, by order of emperor Charles V, the castle was dismantled, with the exception of the tower, to prevent it from falling in hands of the French troops that had invaded the duchy of Milan. After belonging to monks and then to private individuals, the castle was restored in 1971.
The most preserved element is a square tower. It once had Guelph-type merlons. The walls are of Byzantine origin (6th-7th century); these were later heightened and provided with Guelph merlons, while another external line of walls was added.
Also from the 6th century are the Chapel of St. Nicholas and quadrangular tower, which was used as the castellan's residence. Napoleone della Torre was buried in the Chapel of St. Nicholas.
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.