Balquhain Castle is a ruined tower house in Aberdeenshire. It was built in the 14th century and held by Leslie family from 1340. On 5 July 1441 John Leslie of Balquhain made an indenture with four masons, David Hardgat, David Dun, Robert Masoun and Gilbert Masoun that they would complete his building work.
The castle was sacked during a feud with the Forbes family in 1526. The castle was rebuilt in 1530. Mary Queen of Scots in 1562 stayed at the castle prior to the Battle of Corrichie. It was burned by the forces of Prince William, Duke of Cumberland in 1746 and was abandoned.
The tower measures 13.75 by 8.75 metres, and is surrounded by the remains of a barmkin.
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.