Simontornya Castle tower was built in the 13th century by Simon (Son of Salamon) among the swamps of the Sió river. The name Simontornya means Simon's Tower. Nearly all owners of the castle made some alterations throughout the centuries. The Lackfi's built a new gothic wing in the 14th century, altered the old Tower, and added an arcaded loggia to the back-front. After the extinction of the House of Garai in 1482, the castle again belonged to Queen Beatrix, wife of Matthias Corvinus.
Mózes Buzlay, marshall of King Ulászló II improved the castle into a renaissance palace with the help of Italian masters and craftsmen from Buda. After Buzlays' death the castle was taken over by the Turks in 1545. This event marked the beginning of a new era with an emphasis on military requirements. During the nearly 150 years of occupation minor alterations and refinements were constantly being made.
Simontornya, the center of a sandjak was recaptured by Louis William, Margrave of Baden-Baden in 1686. In just two years (1702-1704) major alterations turned the castle into a fortress. During the revolution against the Habsburgs, led by Prince Francis II Rákóczi, Simontornya became the stronghold of the Kuruc rebels in southwest Hungary. The fortress was captured by the Austrian army in 1709 housing troops until 1717. The castle fortress was later donated to the House of Limburg-Stirum, but, after building a new a castle, they turned the old one into a barn. It has been used as a barn by all new owners until 1960, when archeological excavations started.
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.