Baeza is a city and municipality of Spain belonging to the province of Jaén. It is now principally famed for having some of the best-preserved examples of Italian Renaissance architecture in Spain. Along with neighbouring Úbeda, it was added to UNESCO's list of World Heritage Sites in 2003.
Established in the Roman times, the sixteenth century was the golden era of Baeza (and nearby Úbeda). It grew rich from several industries, notably textiles, and the noble families, which were well connected with the Spanish Imperial state. They hired major architects of the era to design the present cathedral, churches, public buildings, and private palaces in the then-fashionable Italian style. The town's university building dates to 1533. The city declined in importance in the seventeenth century, with the only remaining industry consisting of local production of grain and olive oil. As few newer structures were built during this period, this had the effect of preserving the town's Renaissance legacy.
References:The Basilica of Santa Maria in Trastevere is one of the oldest churches of Rome. The basic floor plan and wall structure of the church date back to the 340s, and much of the structure to 1140-43. The first sanctuary was built in 221 and 227 by Pope Callixtus I and later completed by Pope Julius I.
The inscription on the episcopal throne states that this is the first church in Rome dedicated to Mary, mother of Jesus, although some claim that privilege belongs to the Basilica di Santa Maria Maggiore. A Christian house-church was founded here about 220 by Pope Saint Callixtus I (217-222) on the site of the Taberna meritoria, a refuge for retired soldiers. The area was made available for Christian use by Emperor Alexander Severus when he settled a dispute between the Christians and tavern-keepers.
The church underwent two restorations in the fifth and eighth centuries and in 1140-43 it was re-erected on its old foundations under Pope Innocent II.