Köln is a big city close to other big cities, that is almost grown togheter with each other, if they ever will become one city, then it would be the biggest in Germany. Köln used to be the capital for long time ago too. Now it's Berlin.
Kayaking the Wilde Gutach in Black Forest - Germany
Descente de la Wilde Gutach en kayak - Forêt Noire - Allemagne
Mit dem Kayak aud der Wilde Gutach im Schwarzwald - Deutschland (suite)