The Royal Mint (Real Casa de la Moneda) in Segovia was founded by Philip II and designed by Juan de Herrera. It now holds two museum spaces: the Museum of the Casa de la Moneda and the Aqueduct Interpretation Centre.
Located beside the Eresma River and the Alcázar palace, it is the oldest example of industrial architecture still existing in Spain. It operated as a Royal Mint between 1586 and 1869, and still conserves its hydraulic infrastructure intact, with a dam in the Eresma river. Part of the hydraulic system is on display in the outdoor courtyard, with a reproduction of the wooden channels and waterwheels which today, as in the 16th century, power the machinery.
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.