Imposing and austere, yet absolutely harmonius and original in form, it's not surprising that the pre-Romanesque St Donatus' is taken as the very symbol of Zadar and an image of the unique spirit of Dalmatia. The circular shape is typical of the early Byzantine age in Dalmatia. It was founded in the 9th century, when it was called the Church of the Holy Trinity, and given its present name six hundred years later in memory of a famous bishop. Religious services are no longer held here, but the stark interior has excellent acoustics and is used as the concert venue for the annual International Festival of Medieval Renaissance Music, also known as 'The Musical Evenings in St Donatus'.