The University of Oñati was founded in 1540. Until its closure in 1901, it was the only university in the Spanish Basque Country. Its building is now the home of the International Institute for the Sociology of Law.
Founded in 1540 by the Bishop of Avila, Rodrigo Mercardo de Zuazola under the authority of a bull of Pope Paul III, the University of the Holy Spirit was originally located in Hernani, but in 1548 moved to Oñati. The University specialised in theology, law, canon law, the arts and medicine and was strictly limited to Catholics until 1869, when it was opened to all. The institution closed in 1901. Since 1989, the building houses the International Institute for Sociology of Law (IISL).
In 1931 the building was declared a National Historic Monument. It is one of the most remarkable Renaissance buildings of the Basque Country, and was built in the Plateresque style. Construction of the building began in 1543 by the master stone mason Domingo de la Carrera and the sculptor Pierre Picart.
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.