It's called Chartres Blue. It is a blue that is unrivaled in any stained glass in the world. Just a 40 minute trip from Paris, The cathedral stands out as a medieval skyline on the french plains as you approach the town. In a cathedral soaked country, Chartres is one of a kind. Don't miss the labrynth. The surrounding village is a great example of medieval architecture.
The Sainte-Chapelle (French Holy Chapel) is a royal medieval Gothic chapel, located near the Palais de la Cité, on the Île de la Cité in the heart of Paris, France. Begun some time after 1239 and consecrated on 26 April 1248, the Sainte-Chapelle is considered among the highest achievements of the Rayonnant period of Gothic architecture. Its erection was commissioned by King Louis IX of France.