This looks like the sketches I do when I am on holiday. Unfortunately I am not. but the people I drew were. This was made near the Schokoladenmuseum (chocolate museum, for those who haven´t guessed) which is one of the most touristy areas of Cologne. It has big advantages for sketching, you won´t meet people you know and everyone is moving in a different space time continuum (a very slow one, which is good for watching people) . But a nightmare if you´re in a hurry trying to cross that area by bike.