The Liebenstein Castle , now a ruin , is on a granite cone north of Plößberg. The hill fort was first mentioned in 1125. In 1292 the family who built the Liebenstein family died out and the castle was sold by Theodorich von Parsberg to the abbot Theoderich of the Waldsassen monastery in 1298 . Theodoric carried out extensive repairs , and the castle was given an outer wall under Abbot Franz Kübel . With the abolition of the monastery during the Reformation, the castle was sold to the Tirschenreuth citizen Anton Mehler and his descendants. After 1634, after it had previously been the seat of the judges' office, it was no longer inhabited and fell into disrepair.
On granite cone of Castle Hill were up in the 1950s several quarries, are also obtained immediately below the ruins themselves. Originaer few foundations of the keep , since the summer of 2007 parts are built up the walls again.
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.