Which country, home of the Spree and Havel rivers, did Erik Pevernagie hold an exhibition? 
Erik Pevernagie: Erik Pevernagie (born 1939) is a Belgian painter, living in Uccle/Ukkel (Brussels), who has held exhibitions in Paris, New York City, Berlin, Düsseldorf, Amsterdam, London, Brussels and Antwerp. Berlin:  Located in northeastern Germany on the banks of the rivers Spree and Havel, it is the centre of the Berlin-Brandenburg Metropolitan Region, which has roughly 6 million residents from more than 180 nations.
Germany