Blasius Chapel in Bergweiler was first mentioned in a document among the possessions of Tholey Monastery in 1246. The main day of pilgrimage was the annual St. Mark’s day, on which a procession took place from Tholey to the chapel followed by a market. Inside, the chapel has three baroque altars in white, blue and gold. The figure of Saint Blasius is depicted on the high altar, with Saint Mark and Saint Wendelin depicted on the side altars and above them the coat of arms of Tholey Abbey and the abbot Dr. Petrus Bonne.
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.