The Camino de Santiago known in English as the Way of St James, is a network of pilgrims' ways or pilgrimages leading to the shrine of the apostle Saint James the Great in the cathedral of Santiago de Compostela in Galicia in northwestern Spain, where tradition holds that the remains of the apostle are buried.

Created and established after the discovery of the relics of James of Zebedee at the beginning of the 9th century, the Way of St James became a major pilgrimage route of medieval Christianity from the 10th century onwards.

Since 2013, the Camino de Santiago has attracted more than 200,000 pilgrims each year, with an annual growth rate of more than 10 percent. Pilgrims come mainly on foot and often from nearby cities, requiring several days of walking to reach Santiago.

Although it is commonly believed that the pilgrimage to Santiago has continued without interruption since the Middle Ages, few modern pilgrimages antedate the 1957 publication of Irish Hispanist and traveler Walter Starkie's 'The Road to Santiago'. The revival of the pilgrimage was supported by the Spanish government of Francisco Franco, much inclined to promote Spain's Catholic history.

The Compostela is a certificate of accomplishment given to pilgrims on completing the Way. To earn the compostela one needs to walk a minimum of 100 km or cycle at least 200 km.

More Info: en.wikipedia.org