Whether you're on a religious quest or you just need to relax and meditate while traveling, Basilica of St. Castor is a lovely place to discover.
This house of prayer is located in Altstadt Koblenz. Once you've seen all you can at Basilica of St. Castor, take a look at nearby Deutsches Eck, Ehrenbreitstein Fortress, and Emser Therme.