The city history of Fresnay-sur-Sarthe really begins with the erection of the castle, which was initiated approximately in the 10th century (perhaps in the 9th century), under the reign of Charles the Bald. The purpose of the castle was mostly to ensure protection of the river crossing.
William the Conqueror captured the castle twice; first in 1063, then again in 1073. Young Robert of Bellême, who particularly distinguished himself during the siege, was proclaimed as a knight from William's hand.
The strategic importance of the Castle of Fresnay was particularly highlighted during the Hundred Years' War. Successively occupied by the adventurers of Philippe de la Chèze, in 1356, then captured by the English troops of King Henry V, in 1417, it came back to the French, thanks to Ambroise de Loré, future companion of Joan of Arc; Captain of the Castle in 1418, he later became 'Prévôt' de Paris.
In 1420, the city was again taken by the English who occupied the place for thirty years (1420 to 1450). Heavily affected by the Hundred Years' War, Fresnay also had to suffer from the Wars of Religion; in 1562, it was devastated by the Huguenots. From then, the castle started to gradually fall into ruins.
By the late-17th century all that was left of the castle was its gate house, a salt house, the bases of the curtain walls and a ruined keep. It was then donated by Louis XIV of France to the town to serve as a prison and court.
At present the grounds of Fresnay-sur-Sarthe Castle are a nice public park and it is freely accessible. The salt house is now a small local museum.
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.