Originally the Ducal Palace of Lerma had immense gardens below it, on the banks of the river, with fountains, stately homes and seven chapels, of which one (Cristo) remains. All documents relating to its construction have been conserved. A 17th-century work, building started in 1601 under commission from Francisco Gómez de Sandoval y Rojas, Duke of Lerma. Its architect was Francisco de Mora and is it is considered de Mora's masterwork and one of the finest buildings of that era.
During the Spanish Civil War the building was used as a prison. It is currently used as a parador.
The doorway is crowned by a frontispiece held up by columns. The large walnut door is decorated with 520 bronze nails. Above the door are two of the duke's coat-of-arms, decorated with laurel. The railings of the windows and balconies are painted blue and gold.
The interior of the patio round arches on each side. The columns are made of single pieces of granite (the quarries were owned by the duke). On the upper level the columns do not support arches, but rather a running frieze with iron balconies between them, and windows which were originally made from walnut wood.
The palace has four towers at the corners, whose spires were also recovered after the restoration works. No palace could have more than two towers except those belonging to kings, but the Duke of Lerma was given this privilege due to his great powers in Court.
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.