Bzovík castle structure originated by reconstruction of the Cistercian Abbey founded around 1130. Several decades later the Premonstratesian provostship moved here and became the largest feudal estate in the region of Hont. Its fort was repeatedly destroyed in the 15th century.
In 1530 it ended up in hands of Sigismund Balassa who drove out the monks and had the Romanesque monastery reconstructed to the Gothic-Renaissance castle with strong outer fortifications including four corner bastions and the dike. The fort was damaged at the end of the Second World War and reconstructed recently.
Apart from fortifications and bastions, the ruins of the former monastery and part of the Romanesque church in the courtyard survive.
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.