The Way of St. James was one of the most important Christian pilgrimages during medieval times, together with Rome and Jerusalem, and a pilgrimage route on which a plenary indulgence could be earned; other major pilgrimage routes include the Via Francigena to Rome and the pilgrimage to Jerusalem.
The Way can take one of any number of pilgrimage routes to Santiago de Compostela. Traditionally, as with most pilgrimages, the Way of Saint James began at one's home and ended at the pilgrimage site. However a few of the routes are considered main ones. During the Middle Ages, the route was highly travelled. However, the Black Death, the Protestant Reformation and political unrest in 16th-century Europe led to its decline. By the 1980s, only a few pilgrims per year arrived in Santiago. Later, the route attracted a growing number of modern-day pilgrims from around the globe. - Wikipedia