Montorio Castle was presumably a look-out post which was once part of the Verona city fortifications and which is first mentioned in documents dating back to 995 AD. It was subsequently rebuilt by the Aldobrandeschi in the Middle Ages and restructured by the Ottieri and then transformed into a fortified farmhouse after the annexation of the county in the Grand Duchy of Tuscany. Only certain sections of the structure remain, as four of the seven towers were demolished (as well as parts of the walls) by the Austrians in 1820. The castle now serves as a venue for cultural events held in the summer.
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.