sentences:  Due to a lack of suitable stone, it was constructed almost entirely of brick, and is one of the largest brick buildings in the world.In the Jacobins church of Toulouse, the grafting of a single apse of polygonal plan on a church with two vessels gave birth to a starry vault whose complex organization anticipated more than a century on the Flamboyant Gothic.Tradition refers to this masterpiece as "palm tree" because the veins gush out of the smooth shaft of the column-like palm trees.