Brecon Castle was built by the Norman Lord Bernard de Neufmarché in 1093, and was frequently assaulted by the Welsh in 13th and 15th centuries. The castle's ownership changed numerous times. It began falling into ruin when Henry VIII executed the last dukes of Buckingham, who at the time controlled the castle. It was renovated and made into a hotel in the early 19th century.
Numerous renovations were carried out through the castle's history. A shell keep made of stone was constructed in the late 12th century (the keep was initially made of wood). In 1233, a bailey wall, also made of stone, was constructed. Two towers, one round and the other semi-octagonal, were built in the 13th century and early 14th century, respectively. A hall block was added in 1300.
The castle had become mere ruins by the end of the Georgian era. Renovations were begun in 1809 by Sir Charles Morgan of Tredegar House, and more than £7,000 had been spent on the repairs by 1814. The castle was made a hotel, which it currently continues to be.
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.