Cologne: The city of the Rhine, the Cathedral, & the Three Kings

After our Christmas in Aachen we moved on to Cologne. We stayed 2 nights in Cologne in an AirBnb; the first day for exploring the Rhine River ValleyΒ and day 2 we got to meet my sister's boyfriend, Mathias, and his family (exciting) and touring the Cathedral and The Shrine of the Three Kings. The river [...]