Peschiera del Garda was once the site of an ancient lake-dwelling settlement. The fortress played a prominent part in most military campaigns conducted in northern Italy after 1400. In the middle of the 16th century the fortress and town passed into the hands of the Venetians, who ordered reconstruction of the fortress according to projects by Guidobaldo da Urbino and Sanmicheli. Napoleon added two new fortresses there. At the beginning of the 19th century the Austrians redesigned and expanded the fort. With Mantua, Verona, and Legnano, it became one of the strongholds of the Quadruple Alliance. After the end of the Third War of Independence (1866), Peschiera del Garda became part of the Kingdom of Italy. During the First Italian War of Independence, it was taken by the Piedmontese from the Austrians, after a gallant defence by General Rath lasting six weeks, on May 30, 1848.
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.