Kilclief Castle was the earliest tower-house in Lecale area, and was built between 1412 and 1441. It was originally occupied by John Sely, who is said to have built the castle. John Sely was Bishop of Down from 1429 to 1443, when he was ejected and deprived of his offices for living there with Lettice Whailey Savage, a married woman. The building was garrisoned for the Crown by Nicholas Fitz Symon and ten warders from 1601 to 1602.
The castle is tall with four floors. The first floor is vaulted in stone, with two projecting turrets. One (to the south-east) contains a spiral stair and the other (to the north-east) a series of garderobes (latrines) with access from three of the four floors. These projecting turrets are joined at roof level by a high machicolation arch covering a drop-hole for dropping missiles on unwelcome visitors below. There are stepped battlements. As at Jordan's Castle, the ground floor chamber has a semicircular barrel vault built on wicker centering. On the second floor a 13th-century coffin-lid from a nearby church was reused as a lintel for the fireplace. The two-light window in the east wall is a modern reconstruction based on a surviving fragment.
The castle is now in state care. A board outside the castle tells visitors where to obtain a key should they want access. Guided tours are available in July and August.
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.