A traveller sets out on a journey to a holy place and returns home when it is done. Which term names such a journey, and which three destinations are most commonly taught for medieval western Europe?

Explication

A journey made to a holy place out of devotion is a pilgrimage, and the destinations named most often in accounts of medieval western Europe are the city of Jerusalem, the city of Rome and the shrine in north-western Spain. Calling the same journey a crusade fails because that word names an armed expedition summoned by the papacy, not a personal journey of devotion, even when the destination is the same.