Buda Castle is the historical castle and palace complex of the Hungarian kings in Budapest, and was first completed in 1265. Buda Castle was built on the southern tip of Castle Hill, bounded on the north by what is known as the Castle District, which is famous for its medieval, Baroque, and 19th-century houses, churches, and public buildings. The castle is a part of the Budapest UNESCO World Heritage Site.
The first citizens arrived to Castle Hill in the 13th century after the Mongolian invasion, seeking protection in the hills of Buda. The first royal castle was built around this time. The golden age of Castle Hill was in the 15th century, following the marriage of King Matthias Corvinus and Beatrix of Naples in 1476. Many Italian artists and craftsmen accompanied the new queen, and Buda became an important European city. After the Turkish occupation, Buda was in ruins. A Baroque city was built, and Castle Hill soon became the district of government. During World War II, Buda was bombed to the ground and had to be rebuilt again.
Though Castle Hill has changed much since building began in the 13th century, its main streets still follow their medieval paths. Some houses date back to the 14th and 15th centuries, giving us an idea of what the Castle District may have looked like back then. Practically every house has a plaque indicating the century in which it was built, and providing details of its history. A surprising number of the buildings are still private homes, as Castle Hill is also a residential area.
Buda Castle Hill is also home to a large interconnected cellar system that consists of natural caves created by thermal waters and man-made passageways. Inhabitants have used the caverns for centuries for storage and shelter. The earliest traces of human life found here are 500,000 years old.
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.