The Sainte-Chapelle is a stunning royal chapel located in Paris, France, known for its Gothic architecture and impressive stained glass windows. Built in the 13th century by King Louis IX to house his collection of relics, including Christ's Crown of Thorns, the chapel has stood the test of time despite damage during the French Revolution. With its rich history and intricate design, the Sainte-Chapelle continues to captivate visitors as a museum showcasing one of the most extensive 13th-century stained glass collections in the world.