Discover the Old World legends and royal intrigue of medieval Paris on this great-value combo tour of Ile de la Cité and Notre Dame Cathedral. Explore the site of the city’s original founding on a walking tour of the storied Ile de la Cité, sandwiched between the banks of the Seine River, and learn the secrets behind one of Europe’s most famous Gothic cathedrals inside Notre Dame. Cap off the 2.5-hour tour with skip-the-line entry to King Louis IX’s glorious, 13th-century chapel, Sainte Chapelle.