These thermae (Roman baths) of Gijón are considered one of the most important sites in northern Spain. Campo Valdés are a site museum on baths dating from the Early Empire. They are located in front of the Church of San Pedro under Campo Valdés Gardens, at sea level. The baths were discovered in 1903, remaining hidden from the public until 1965.
Located outside the Roman walls, the baths consisted of two distinct units: the household area and the area of the thermae.
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.