Castelnuovo Magra is mainly known for its ancient castle which was once the capital of the Bishop of Luni's domain. The castle had been originally built in the 12th century by Bishop Walter and then later completed by Henry of Fucecchio who developed the Code Pelavicino. Quite a lot of changes and additions have been made to the castle over the centuries. Today, visitors can see the remains of the large ancient walls, the masonry sections of the original castle and the large tower which had a rectangular plan.
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.