Rohkunstbau in Schloß Altdöbern and Magnum 70 Years in Reinbeckhallen.
Recommended pitstops: Orangerie am Schloß Altdöbern; and there is a tiny café with great coffee right next to Reinbekhallen.
Das Kleine Grosz Museum – a relatively new museum in a former petrol station, and street photography by Holger Biermann in Willy-Brandt-Haus
If you are looking for a pitstop, the café has what looked like a pretty standard selection of quiches and cakes.
Graduates from Ostkreuzschule für Fotografie in Kunstraum Kreuzberg/Bethanien (first two photos taken on the way there)