The Palazzo Ducale di Mantova ('Ducal Palace') is a group of buildings in Mantua, built between the 14th and the 17th century mainly by the noble family of Gonzaga as their royal residence in the capital of their Duchy. The buildings are connected by corridors and galleries and are enriched by inner courts and wide gardens. The complex includes some 500 rooms and occupies an area of c. 34,000 m². Although most famous for Mantegna's frescos in the Camera degli Sposi (Wedding Room), they have many other very significant architectural and painted elements.
The Gonzaga family lived in the palace from 1328 to 1707, when the dynasty died out. The oldest structures, those located on Piazza Sordello square, were built between the 13th century and the 14th century by the Bonacorsi family, who dominated Mantua before being ruled out by the Gonzagas in 1328.
In the late 14th century, an imposing fortress, the Castle of Saint George, was built near the city’s lakefront. The castle was designed by military architect Bartolino da Novara as a defensive structure aimed at protecting the heart of the town, and subsequently converted into the main residence of the Gonzaga family.
In 1556, Guglielmo Gonzaga took the decision to merge those buildings into a single, grandiose architectural complex. Therefore, a number of late Renaissance-style courtyards, gardens, passages, porticoes, and new wings were built in the second half of the 16th century after designs by some of the most renowned architects and artists of the time, including Giulio Romano, Giovan Battista Bertani, and Antonio Maria Viani.
Subsequently, the buildings saw a sharp decline, which was halted in the 20th century with a continuing process of restoration and the designation of the area as museum. In 1998, a hidden room was discovered by Palace scholars. The room is thought to have been used for performances of Monteverdi's music in the late 16th century.
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.