While living in Berlin, Germany, Alex Colville partiicpated in the Kunstlerprogramm, a one year grant offered to artists in film, literature or the visual arts which started in 1963. Alex Colville received the grant in 1971, at which time he painted at least two works, Berlin Bus (http://alinefromlinda.blogspot.ca/2017/06/berlin-bus.html) and The River Spree. The Spree is the river on which the original Berlin centre was built. Spanning 400 kilometres, it runs through Saxony, Brandenburg, Berlin and the Czech Republic. Tourists taking cruises on the River Spree might pass by the Berlin Cathedral, the Reichstag and the Schloss Charlottenburg. Museum Island, which includes a collection of five museums, is located in the middle of the Spree.
Bode Museum on Museum Island in the River Spree courtesy https://en.wikipedia.org/wiki/Spree#/media/File:Bodemuseum_-_Front.jpeg.