Sainte - Chapelle

 The Sainte-Chapelle is considered among the highest achievements of the Rayonnant period of Gothic architecture.
Along with the Conciergerie, the Sainte-Chapelle is one of the earliest surviving buildings of the Capetian royal palace on the Île de la Cité. Although damaged during the French Revolution and restored in the 19th century, it has one of the most extensive 13th-century stained glass collections anywhere in the world.( Wikipedia )