For over 700 years Örebro Castle has kept a watchful eye on everyone crossing the bridge on the River Svartån. The oldest part of the castle, a defence tower, was erected in the latter half of the 13th century. This tower was added to in the 14th century to make a larger stronghold. The castle was expanded during the reign of the royal family Vasa between 1573-1627 to the impressive Renaissance castle.
After Vasa family Örebro castle was left to decay, but the main restoration took place in 1758-1764 by Carl Johan Crondstedt. After him the castle was used as a residence of county governor. The castle was finally restored to the 16th century appearance between 1897-1900.
Today there are guided tours, an exhibition centre and the castle is a very worthwhile sightseeing destination.
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.