Lyon Cathedral, officially known as Cathédrale Saint-Jean-Baptiste de Lyon, is a magnificent Roman Catholic church that stands proudly in the heart of Lyon, France. With its construction beginning in 1180 and concluding in 1476, the cathedral showcases a consistent architectural style despite the long period over which it was built. It is not only a place of worship but also a historical monument, recognized by UNESCO as a World Heritage Site. The cathedral has played a significant role in religious and cultural events, including the annual Festival of Lights, which transforms the façade into a spectacle of light and color.