St Collen's Church is a parish church in the town of Llangollen, Denbighshire, Wales. The first church on the site was founded by Collen in the 6th century. Nothing of this building remains. A new church was built in the 13th century, in the Early English Gothic style. This was developed in the succeeding centuries, and then almost completely rebuilt in the 19th century. The architect of the Victorian reconstruction was Samuel Pountney Smith, who retained little of the earlier church, with the exception of the tower. The churchyard contains the grave of the Ladies of Llangollen, Eleanor Charlotte Butler and Sarah Ponsonby, and their servant Mary Carryl, who lived at the nearby Plas Newydd.
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.