The abbey of Saint-Jouin-de-Marnes was built in the 11th and 12th centuries to the site of 4th century oratory. The abbey was fortified in the 14th century and is an impressive size, measuring 72 metres long and 15 metres tall. It contains beautiful Poitevin Romanesque art. Visitors can also admire the arches of its doors with their sculpted motifs, the scene of the Last Judgment adorning the pediment, the square bell tower with round bays, and in the majestic chancel, the oak stalls and eagle-shaped lectern from the 17th century.
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.