Of all the wells throughout Ireland dedicated to Saint Patrick, the Struell wells must be the most famous. It is said that Saint Patrick travelled throughout Ireland using wells to baptize his new converts and in some cases to demonstrate the power of God with healing acts or with expressions of powerful piety and dedication. At Struell wells, there is a story of how Patrick used to bathe under a fountain of flowing water.
Struell Wells was built around a stream flowing through a secluded valley. It was a popular place of pilgrimage from the 1600s until the 1840s. The waters were believed to have curative powers and the site has a ruined church, 2 bath-houses (one for men, one for women) and two roofed wells, all fed by the stream.
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.