Ehrenfels Castle was probably built in the first half of the 13th century. The first mention of the Lord of Ehrenfels is in 1257. In 1320 it was owned by Burkhard and Rudolf von Schauenstein, who also used the name Ehrenfels or Herrenfels. They probably expanded the simple bergfried with residential space and a ring wall around that time. The castle was first mentioned in 1423 with Hermann von Ehrenfels as the owner. Toward the end of the 15th century or in the early 16th century it was given to Cazis Monastery, but the Schauenstein-Ehrenfels family continued to occupy it. During the 16th century the castle was renovated and rebuilt into a more comfortable palas.
However, by 1600 Ehrenfels was abandoned and began falling into ruin. Parts of the castle were demolished for building material, and when the Ehrenfels-Schauenstein male line died out in 1742, only a ruin remained. In 1933 it was acquired by the Schweizerische Burgenverein (Swiss Castle Association) and converted into a youth hostel. Since the conversion was done without archeological investigation or records, much of the history of the castle was lost. In 1954 Swiss Youth Hostels bought the castle from the Association. It remains in operation today with 38 beds.
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.