Sainte Chapelle is a pearl of Gothic religious architecture. The small, former palace chapel is the quintessence of what is most important in this style. Entering it has the impression of entering a glass room. There are hardly any masonry walls here. Enormous stained-glass windows occupy the entire side surfaces.
The chapel was built in the 13th century at the behest of Louis IX. It was a place of storage for relics such as Christ's crown of thorns. The crowning of the towers in the form of a crown of thorns is a reference to this. The chapel is two-storey and is currently located in the Palace of Justice. Its impressive upper part was intended for the royal family.
It is a small, single-space Gothic building, soaring, with stepped buttresses topped with pinnacles. The walls of the chapel contain 12 tall, pointed windows filled with stained glass windows depicting scenes from the Holy Bible. Above the entrance there is a huge rosette with scenes from the Apocalypse of St. John.