Saranta Kolones ('Forty Columns castle') is a ruined medieval fortress inside the Paphos Archaeological Park. It takes its name from the large number of granite columns that were found on the site and probably once formed part of the ancient agora. The Byzantine castle is believed to have been built at the end of the 7th century AD to protect the port and the city of Nea Pafos from Arab raids. It was later remodeled by the Lusignans in the early 1200s.
The fortress had a three-metre thick wall with four huge corner towers and another four intermediary towers along the joining walls and moat surrounding the castle. Access was across a wooden bridge spanning the moat. The square courtyard measured 35 metres long by 35 metres wide, with a tower at each corner. The main entrance was through a fifth, horseshoe-shaped tower on the east side. Destroyed by an earthquake in 1222, the castle was subsequently abandoned.
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.