Illasi Castle was built in the 12th century. The structure, composed by a fortified palace and a single tower, surrounded by a wall, is extremely peculiar and almost unique in Europe. It is still unclear which lord built it. It already existed when the tyrant Ezzelino da Romano used it as a base for his wars.
Later it became one of the main strongholds during the domination of the Della Scala family, lords of Verona. It was besieged several times, and at the end of the 14th century it was burned by the troops of the Da Carrara family, lords of Padua. It was then conquered, like all the province of Verona, by the Republic of Venice.
In the 15th century its military function was impaired by the use of guns: after an easy conquest by Milanese troops, the Venetians decided to dismiss it. They gave it to the Pompei family, one of the few noble families of Verona always faithful to Venice and without sympathies for the rival Austrian Empire. The Pompei shortly used the castle as a residence.
Of the original structure only the gateway, a small tower, the remains of a chapel, two cisterns, the keep and 30meter high square tower remain.
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.