The oldest remains of Bordeaux, the Palais Gallien designates the Roman amphitheater of Burdigala, the 2nd century, which still has beautiful arches, a monumental door and structural elements. A large part of the site occupied by the building is now covered with houses. During the the French Revolution, parts of the building will then be demolished to allow the sale of lots of land and the construction of homes. The remaining vestiges will be classified and confirmed only from 1840. The name of 'Palace Gallien' is the fruit of several legends and confusions around the origin and the dating of the ruins.
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.