Founded in 1170 by Guy V, the Laval chapter originally served the castle chapel. In the 13th century, it was transferred to the "bourg chevreau". The site grew in importance in the 14th century, with Saint-Tugal as its patron saint. In the 15th century, Anne de Laval decided to completely transform the building, adding a bell tower, a single nave, side chapels and a flat chevet.
The collegiate church then became the necropolis of the lords of Laval. The French Revolution and the privatisation of the building in the 19th century turned it into the ruins it is today. The ruins were restored during the construction of the new courthouse in 2000.
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