Lichtenstein Castle is a high to late medieval hill castle about six kilometres north of Ebern in the Lower Franconian county of Haßberge in Bavaria. It is located in the municipality of Pfarrweisach.
Of the originally four sub-castles of this great joint-fief or Ganerbenburg only one, the South Castle, is still occupied. The North Castle only survives as ruins. On the site of the now vanished third castle the Protestant Church of the Eternal Flame (Zum Ewigen Licht) was built in the Baroque era. In the southwestern part of the site lie the ruins of a fourth joint-vassal castle seat.
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.