Bernau bei Berlin is a small historic town about 25km north of Berlin, easily reached by S-Bahn (line S2). It has a well-preserved medieval centre, including three of its original town gates — the Steintor, the Werdertor, and the Mühlentor — and a history dating back to the 13th century. It makes an excellent half-day or full-day trip from Berlin for anyone interested in Brandenburg's medieval past and in one of the finest Bauhaus buildings in Germany.
The Heimatmuseum inside the Steintor covers 500 years of local history, from medieval brewing to local craft and daily life. The Pulverturm, a converted medieval gunpowder tower, now hosts the Wolf Kahlen Intermedia Arts Museum, an idiosyncratic space showing media art and video installation.
The biggest surprise in Bernau is the ADGB Trade Union School on the northern edge of town: a 1928 Bauhaus complex by Hannes Meyer, with its sinuous curved layout and radical social vision. It is a UNESCO World Heritage Site and one of the most significant pieces of modern architecture in the Berlin region. Combine it with a walk into the forests of Barnim Nature Park, which begins just beyond the town's edge, and you have a full day with genuine variety.