sentences:  The construction was started by Girald Fruchel in the 12th century.This construction was continued and modified until the 17th century, going from Gothic architecture to Classicism (Saint Secundus chapel) and finally Baroque architecture (Velada Chapel).The first stages of the towers and the aisles date from the 13th century, alongside the second stage of the towers (one remaining unfinished), the cloister, the vaults and the flying buttresses date from the following century.