On a wooded hilltop just southeast of Rocbaron village are the ruins of Château de Saint-Sauveur. A short hike up from the village visits the ruins and gives you a magnificent view across the land.
About 10 minutes up the trail are the ruins of the ancient chapel. Really just the stone walls of the old building sitting in the trees at the edge of a small clearing. Interesting, but the real ruins are another 10-15 minutes up to the peak.
At the extreme top of the hill sit the stone ruins of 12th-century Saint Sauveur Castle. Enough of the castle walls remain on the eagles-nest site to give a Medieval feeling about it. Across the hills to the northeast, the castle ruins of Forcalqueiret are clearly visible.
Written history of the castle is rather scarce. Study of the stone defenses indicates 11th century, and possibly 10th century. The story of the castle's demise is also verbal and variable. One theory is that the castle was destroyed during local wars. Another, possibly more plausible, is that the isolated site was abandoned for the newer and more accessible castle of Forcalqueiret.
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.