The Arab Baths of Jaén (Baños Arabes de Jaén) are a well-preserved historic hammam (Islamic bathhouse). The bathhouse dates from the 11th century during the Taifa or late Caliphal period, but may have undergone later alterations, probably in the 12th century. It is one of the largest known examples of Andalusi bathhouses, and is distinguished from others by its particularly large 'warm room' (bayt al-wasti).
Following the Christian conquest of the city by Ferdinand III in 1246, the baths remained in use for a while until they were repurposed as tanneries. In the 16th century Don Fernando de Torres y Portugal (Count of Villardompardo and Viceroy of Peru) built himself a private palace on top of the baths, thus hiding them for centuries. They were only definitively rediscovered by Enrique Romero de Torres in 1913 during a survey of historic buildings in the city. Archeological studies later followed and the site was declared a Cultural Heritage Property of Spain in 1931. Today it is open to visitors as a historical attraction as part of the Palacio de Villardompardo.
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.