In August 1999, we went to Cologne and Bad Salzig and sang at Wesseling and Maria Laach monastery. 

Here are: Cologne Cathedral, Limburg Cathedral and the monastery.

Here are: the hotel we stayed at in Bad Salzig, a float in the flower festival procession at Bad Ems, the Loreley rock (guess what we sang to the captive audience on the boat!) and Burg Eltz.