Bernard the Elder, Admirable Master, and Roberto, began the construction of the Romanesque Cathedral in 1075, during the reign of Alfonso VI, when Diego Peláez was bishop. After that initial stage, a number of historical changes suspended or, at least, slowed down the works until they were newly launched during in times of Archbishop Gelmírez, in 1100. The works were commissioned to Master Esteban (also known as "Maestro de Platerías"); little by little the construction of the Cathedral progressed throughout the 12th century. In 1168 Master Mateo was commissioned to complete it, including the western closure and the building of the Choir in the main nave. In 1211 the Basilica was consecrated before Alfonso IX.

Although the fundamental medieval structure has been preserved, over the centuries the Cathedral has changed its physiognomy as a result of the building of the Cloister and its annex areas, during the Renaissance, and especially during the Baroque period, when works such as the main chapel, the organs, the closing of the chevet or the Obradoiro facade were carried out, among other important developments. During the Neoclassic period the new Azabachería facade was executed and over the past one hundred years different actions have continued to be carried out.