The Church of the Holy Cross (Église Sainte-Croix) was formerly the church of a Benedictine abbey founded in the 7th century, and was built in the late 11th-early 12th centuries. The façade is in the Romanesque architectural style.
The church has a nave and four aisles, a transept with apses on each arm, and a polygonal apse. The nave is 39 m long, while the apse is 15.30 m high. Its organ dates from the 18th century.
In the 19th century, the church was renovated by Paul Abadie. The former Benedictine abbey now houses the École des beaux-arts de Bordeaux.
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.