St. Michael's Church in Fulda is considered to be the oldest Holy Sepulchre church in Germany, built in the Carolingian architectural style (Pre-Romanesque) by the abbot Eigil in the years 820-822. It served as a burial chapel to Fulda monastery founded in 744, which was one of the prominent cultural centres of the early Middle Ages. St. Michael stands in the neighbourhood of Fulda cathedral, and the architect was probably the monk Racholf (d. 824).
The rotunda and crypt remain preserved from this time. In the 10th and 11th century, the church was extended from the rotunda, and a west tower was built. In 1618 the roof over the rotunda was rebuilt with a conical roof, and in 1715-1716 a chapel was added to the north side. Wall paintings in the interior date from the 11th century.
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.