Trier
Trier is a gateway: four Caminos end here, and at the same church door of St. Matthias, the only apostle's tomb north of the Alps, the routes to Le Puy and Vézelay begin. The cathedral keeps the Holy Robe, and the Porta Nigra has stood since the year 170. Stay at least two nights.
Mosel-CaminoTrier - Le Puy+2