St. John's Abbey in the Thurtal was a Benedictine monastery originally established in the mid-12th century. The oldest written record of it is dated October 4, 1152, when Pope Eugene III took the monastery into his protection. The pope confirmed the monastery's possessions and free election of its abbot and Vogt.
On October 24, 1178, Pope Alexander III confirmed the abbey's extended possessions. In 1227/1228, the king became Vogt of the abbey. In December 1231, Emperor Frederick II issued a Golden Bull confirming his obligations as Vogt of the abbey.
The abbey also frequently bought land in the territory which is now the principality of Liechtenstein, most notably the prominent Red House in Vaduz, which it purchased in 1525 from the heirs of the medieval owners, the Vaisli family.
The abbey's high point was during the 14th century. It survived the Reformation, but lost its independence in 1555, when it became a priory of St. Gall's Abbey.
In 1626 the buildings were severely damaged by fire, and the monks were afflicted by a mysterious illness and the community moved along the valley to a new location at Sidwald near Nesslau, since then known as Neu St. Johann. On the site of the old monastery a parish church was built, with a priest's house.
The new monastery buildings in Nesslau, which were completed by 1680, were in a magnificent Rococo style. Toggenburg was an area of mixed denominations, and the priory was an instrument of the Counter-Reformation under the leadership of the Prince-Abbots of St. Gallen.
The priory was dissolved in 1805. The former monastic church became the Roman Catholic parish church of the parish of Neu St. Johann. The remaining buildings now accommodate a remedial educational centre known as the Johanneum.
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.