Roudnice Castle was built in the 12th century by Bishop Jindřich Břetislav, the nephew of the Czech king Vladislav I, to protected an important trade route from Prague to Upper Lusatia along the Elbe. The castle complex included several farm buildings, protected by a fortified wall; the castle itself had walls that were two meters thick, and watch towers in each corner. In the mid-14th century, it was rebuilt in a Gothic style and became a favorite summer residence for Prague bishops. It is said that Jan Hus was ordained as a priest there.
In 1421, the Catholic Church sold the castle to Jan Smiřický, who renovated it once again. George of Poděbrady, king of Bohemia (1420-1477), captured Roudnice from Smiřický in 1467. It passed into the ownership of William Rožumberk, the Supreme Burgrave and one of the wealthiest men in Bohemia. After Rožumberk’s death, his widow Polyxena Pernštejn married Zdenek Vojtěch of Lobkowicz, Chancellor of the Czech Kingdom and later 1st Prince Lobkowicz, bringing Roudnice into the Lobkowicz family’s possessions. In 1652 their son Václav Eusebius, 2nd Prince Lobkowicz, embarked upon an ambitious project to transform the castle into an early baroque palace. From 1657 until the Second World War the Lobkowicz Collection's library was stored in Roudnice Castle, leading to the library being named the Roudnice Lobkowicz Library.
The castle is open to the public. The basic tour includes visits to the courtyard , tour of the castle chapel with předsálím with information about the family Lobkowicz, a tour of the Romanesque castle from the courtyard, the view from the balcony of the castle. The wine tasting tour includes a tour of the foundations of the original Romanesque castle from the 12th century with a presentation of the town, the castle and the winery.
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.