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.

Kw is a great art institute situated at the backyard of a very eastern part of town, place for many other small galleries. Auguststrasse is worth the walk and Kw is worth the stop.

Flughafen Tempelhof was once the symbol of nazi-pride when Hitler notoriously comissioned construction of the smallest duty free shop in the world (and a beautiful example of fascist architecture). After the war, Tempelhof became one of the frontiers of the cold war with the U.S. battling the communists (who undoubtedly wanted to get rid of the small duty free shop altogether) via the Berlin Airlift. It turned out to be a huge succes, and enabled the allied forces to remain their presence in Berlin and save the small duty free shop. The real free-market victory will come in about two years though, when project developers will take over and start building houses, blocking my view onto the airfield.

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. 

You can grab a coffee or a juice right next door to the KINDL Center in the old brewing Hall at König Otto, complete with all the fascinating brewing equipment from its completion in 1930 it is a hall reminiscent of German Expressionism style… or as stated on their website. :)