Consecrated in 1248 as a chapel connected to the palace of King Louis IX it remains one of the best examples of the Rayonnant period of Gothic architecture. Louis was a bit of a religious nut and spent a kings ransom buying various religious relics, like a piece of the holy cross, the crown of thorns, the image of Odessa, the sacred spear, etc. He needed a place to keep all his stuff so he commissioned the chapel. Like most French sacred buildings it suffered major damage during the French revolution of the late 18th century. At one stage it was used as records storage and the lower sections of beautiful stained glass were removed to allow more light in. The building was later faithfully restored by Eugene Voillet-le-Duc in 1855. It was declared a national monument in 1862. It's located in the Palais de Justice area on the Isle de la Cite. You pass through police checks and metal detectors to enter the area. It looks non de ...