The castle of Aymavilles is certainly the most characteristic and recognizable element of the Aymavilles for its position and architecture characterized by the four cylindrical towers crowned by 'murder holes' that enclose a central body with a square base.
The building, the origins of which date back to 12th century, was repeatedly reconfigured, changed its use from defensive to that of elegant lordly residence inside a great park.
The first record of the fiefdom and the castle date back to 1278, when it was simple a four-sided tower surrounded by a wall, according to the widespread type of the oldest Valdostan castles. Today, the large surrounding walls of the 13th century tower still exist, characterized by being strongly banked, along with a spinal wall divides it into sections at full height.
In 1357, Aimone de Challant became subject to fiefdom three years before the fiefdom of Aymavilles by Amedeo VI of Savoy, allowing it to operate as the defensive reinforcement of the facility, probably considered too vulnerable particularly the level approach on the surrounding land. The four corner towers were thus made: these have circular bases and are unequal in diameter, height and type of crenellations; 'murder holes' and arrow loops were also built, in addition to a double wall with a moat and draw bridge.
At the beginning of 18th century, the external fortifications were demolished and the land was arranged in terraces and gardens, changing the designated use of the building.
After many changes in ownership, the castle was purchased in 1970 by the Regional Administration, which has undertaken major restructuring in these past years.
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.