15th century castle in Sarmiento belonged to the important Sarmiento family. Its last owner was the House of Alba. Acquired by the Provincial Council of Palencia, we can visit the tower, its rooms and its ramparts. It hosts an exhibition entitled PlastiHistoria, showing various scenes made in clay on the history of Palencia. Its keep has a height of 22 meters and the thickness of its walls is the largest of the Spanish castles, reaching 11 meters thick in some places
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.