Strangford Castle appears to be a small tower house from the late 16th century, but a blocked door of 15th century type at first floor level, seems to indicate the remodelling of an earlier tower. The current entrance, in the north-east wall, is a reconstruction, positioned by the surviving corbelled machicolation above and a socket from a draw-bar to secure the original door. The original entrance may have been on the first floor. It is a small, rectangular, three-storey tower house with no vault or stone stairway. The first floor fireplace has an oven. The ground floor chamber is lit only by small gun-loops. The roof has very fine crenellations, again with pistol-loops. The original floors, like their modern replacements, were made of wood.
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.