The abbey of Leffe was founded in 1152 on the river Meuse in southern Belgium. Like many monasteries across Europe, the Premonstratensian (Norbertine) canons of the abbey brewed ale, starting in 1240. Using knowledge passed from generation to generation and ingredients found in the wild near the abbey, the canons developed a unique ale with a subtle taste and high alcohol content, brewed only at the abbey.
The abbey has been damaged by both natural and human circumstances over the years: it was destroyed by a flood in 1460, a fire swept through the settlement in 1466, billeted troops damaged the brewery in 1735, and the outbreak of the French Revolution in 1794 resulted in it being abandoned and the brewery destroyed. The canons returned in 1902.
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.