 In many Gothic churches, particularly in France, and in the "Perpendicular style" of English Gothic architecture, the treatment of vertical elements in gallery and window tracery creates a strongly unifying feature that counteracts the horizontal divisions of the interior structure.Increasing the amount of light in the interior was a primary objective of the founders of the Gothic movement, especially Abbot Suger, who was an advisor and minister of King Louis VI and Louis VII, and the creator of the first Gothic structure in France, the rebuilt Basilica of Saint Denis.He described the new kind of architecture he created at Saint Denis