Revelin Fort was built outside the city walls and is partially included into the defence complex of the Ploče Gate. The lower part of the fort was built in 1463, in the shape the City model held by St. Blaise on the triptych painted by Nikola Božidarević around 1500. The fort protected both the eastern part of the City from mainland and the entrance to the City Harbour.
In 1538 the fort was strengthened and enlarged in the form of an irregular square according to the instructions of Italian engineer Antonio Ferramolino of Bergamo. Revelin has three entrances, and was encompassed by the moat and sea on three sides. The well-known Renaissance craftsman Ivan Rabljanin kept the foundries for casting cannons and bells in the large Fort interior.
Today, the spacious fort terraces serve as venues for various performances of the Dubrovnik Summer Festival.
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.