Starigrad Fortress was built during the Croatian–Ottoman wars (15th century) as a primary defence against the Ottoman Empire. The precipitous fortification is sited on a 262 m ridge above the town Omiš. In the event of attack, its purpose was to provide refuge for local people and be a stronghold where they could retreat to and resist the Turks.
As the stone fort's defensive strength is derived from the elevation at which it was built, it is a rudimentary defensive structure. A two-storey square tower stands at its highest point, serving as both a lookout post and keep. A simple bastion stands at the opposite end of the fort to cover the approach path and the ridge line. It has an outer barbican to defend the fort's narrow entrance gateway and the gorge below the fort. The walls, which are about 1 m thick, are made from locally quarried limestone. They enclose an inner bailey that is separated into two distinct levels by the difference in the site's natural rock height. Access between the levels is via a small stone stairway that was once protected by a stone wall and gateway. In event of attack, the fortification's design permits the defenders to fall back to higher ground as each level falls.
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.