Winneburg Castle ruins stands about 80 metres above the Endert valley. It was built around 1240 and was the property of the family of Wunnenberg until the lineage died out in 1637. Around the middle of the 17th century the castle passed into the possession of the Metternich family.
Having been blown up by the French in 1689, the gate porch and the front courtyard are still preserved from the 13th century. In addition, the round keep and two half-towers with the almost 20 metre long great hall are still almost fully preserved. Apart from these there are the remains of housing and outbuildings from the 15th century. Today the castle belongs to the town of Cochem.
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.