From the Pyrenees to Santiago de Compostela, the French Way passes through the regions of Aragón, Navarre, La Rioja, Castile and Leon, and Galicia, a route followed by over 150,000 pilgrims every year. This pilgrimage first began when the tomb of Saint James the Apostle was discovered in the 9th century, and it became internationally known when it was described in detail in a 12th-century travel book, the Codex Calixtinus.