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 Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.