Penallt Old Church dates from the late thirteenth century or early fourteenth century and its dedication is unknown. The main part of the building is medieval, although the base of the tower is earlier, and the porch is later, bearing a date of 1539. The church was restored in 1885-7 and again in 1951. It is constructed of Old Red Sandstone.
The interior has a barrel-shaped ceiling from the sixteenth century and a four-bay Perpendicular arcade. It also contains an elaborate coat of arms of Queen Anne, dating from 1707. The altar table was carved in 1916 by a war refugee from Belgium, who was reputed to be a master carver at St. Rumbold's Cathedral in Mechelen.
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.