Tuesday's lunch hour tip is the amazing Berlin Philarmonic. A short-duration concert (around an hour) happens every Tuesday at 13h, for free. People make the Philarmonie's foyer full, sitting on the stairs, on the ground and everywhere around. Little advice: bring with you a little cushion for more comfort and try to arrive early to find the good spots.

Secret place that is almost always empty.

The best cheeseburger in Berlin costs less than 5. Burgermeister is mandatory in town when you're craving for a basic and delicious to the bits chesseburger. 

Art bookstore for the more off-the-grid publications.

Cemetery of the Dreifaltigkeitsgemeinde (Dreifaltigkeitsfriedhof) in Kreuzburg on Mehringdamm 22, between Zossener Strasse and Blücherstrasse. The grandson of German-Jewish philosopher Moses Mendelssohn, is musician Jakob Ludwig Felix Mendelssohn who was born in Hamburg and lived in Berlin from age two. Felix Mendelssohn and his family are buried in the middle of Kreuzburg at the Cemetery of the Dreifaltigkeitsgemeinde. Today it is administered together with its 5 neighbouring Protestant cemeteries by the cemetery administration St. Jacobi number I.