Al-Muallaq Mosque was built in 1758 by the Arab ruler of Acre, Zahir al-Umar. It was built in a courtyard on the site of a structure commissioned by the Crusaders and which later became the gate to the Genoaese quarter of the city. Up until 1746, the structure was used as a synagogue by Acre's Jewish residents, called the Ramchal Synagogue. The Jews still owned the building when Zahir chose to transform it into a mosque, but compensated them with a different building located in Acre's Jewish quarter. Leftover features of the synagogue include the niche for the Holy Ark and inscriptions in Hebrew.
The mosque is positioned along the edge of Acre's Old City market, situated between Khan al-Umdan and Khan al-Ifranj, and is risen over the street. From the outside, the main indicators of the mosque are its low-lying dome and the round base of its former minaret. The mosque's entrance is located beneath the original minaret's base. This minaret was demolished by the municipality of Acre in 1950, citing a public safety risk. The body of the mosque is mainly constituted by a large, square-shaped prayer hall, A triple-domed portico precedes the prayer hall's entrance. Beside the prayer hall is a smaller room that is currently used as a library. A stairway beneath a covered entryway leads into the courtyard.
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.