The Kirchberg convent is considered to be one of the most historically important religious buildings in Baden-Wuerttemberg. It also ranks as one of the oldest, having been built in the early 13th century, and one of the first female church houses in central Europe.
The Kirchberg monastery was a convent built in 1237, on the site of a former castle. In 1245 the monastery was recognised by Pope Innocent IV. Over roughly the same period, the number of nuns entering the convent went from around ten to sixty. This rise in the population of the convent can be credited in part to the apparent surge of 'religious awareness', with more women (of every class) wanting to live the life of a nun or at least one of piety in order to ensure that they remained spiritually healthy. The convent continued its religious work for the next 500 years, despite the many changes that occurred in the area. However, after a secularisation that occurred in 1806, the monastery was virtually condemned to disuse: the nuns that were there were allowed to remain for the rest of their lives, but no more were allowed to join. The last nun left the monastery in 1865.
Today, the monastery is used as any normal church house. It is the centre of the societies of the Berneuchen Movement.
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.