The Old Hrodna Castle (also known as the Hrodna Upper Castle and Bathory's Castle) dates from the 11th century as the seat of a dynasty of Black Ruthenian rulers, descended from a younger son of Yaroslav the Wise of Kiev. The 13th-century keep of the castle belonged to a type of Belarusian defensive tower represented by the Tower of Kamyanyets. Vytautas the Great added five Brick Gothic towers in 1391-98, transforming the castle into one of his main residences. Casimir IV Jagiellon also favoured Hrodna over Lithuania's official capital. It was there that the Polish Crown was offered to him, and it was there that he died in 1495.
The next notable tenant of the castle was Stephen Báthory who envisaged Hrodna as the capital of his vast empire in Eastern Europe. He engaged Scotto of Parma to replace the Vytautas Castle with his own residence in the advanced Renaissance taste of Northern Italy. After Bathory's death in Hrodna in 1586, his pet project was abandoned. The citadel was devastated by the Russians during a Russo-Polish War in 1655.
The castle's revival was owing to Krzysztof Zygmunt Pac who raised sufficient funds to finance the refurbishing of the royal residence. The restored castle was selected by King Michał Korybut Wiśniowiecki of Poland as the location for every third Sejm of the Polish–Lithuanian Commonwealth. The castle suffered extensive damage during the Great Northern War, forcing the royal court to move into the New Hrodna Castle.
After the partitions of Poland the castle was given over to the Russian army and housed a barracks. The authorities of interwar Poland restored the chamber of the ambassadors and the Sejm Hall. In 1925, the former royal palace opened on historical and archaeological museum. At present the castle is located the main exhibition of Grodno Museum of History and Archeology.
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.