First mentioned in 1349, but possibly older, Buben castle was home of the knights of Buben (means literally 'drum'), and held it´s name even under other owners. The family sold their first castle around 1378 (they had other castles then), but they use the family name Buben until today. The castle often changed owners together with the surrounding lands, it wasn´t used for living because of it´s isolated position in the 16th Century, and began to deteriorate but only slowly, because there was nobody around to disassemble the stone for their own use. It was a partial ruin in 1912, when first larger repairs were made by the Czech tourist club. A through conservation was done in the 1930ies, but a very unprofessional repair was done in 2010 with modern materials, which destabilized the repaired parts and a bastion completely collapsed in 2013. because the used concrete sucked in too much water and became too heavy for the old wall. The future for now is unsure.
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.