The travel details that are good to know.
Population of Germany: 81,751,602; Berlin: 3,460,725
Longest river in Germany: Rhine, 1319km. The Spree is 403km.
Highest point of Germany: Zugspitze, 2962m
Highest point in Berlin: Teufelsberg, 114m
Highest natural point in Berlin: Victoriapark Kreuzberg, 66m
Berlin's territory: 900 square kilometers
Drinks & Alcohol
Germans like their beer, drinking about 107 litres per capita per year (down from 136 litres 15 years ago). Unfortunately Berlin's local brew, the slightly sour Berliner Weiße, is only really palatable 'mit Schuss', with a shot of sweet fruit sirup. Cocktails and long drinks of varying quality and price are available in a multitude of places. Non-alcoholic drinks often sipped in Berlin include Apfelschorle, a refreshing mix of apple juice and sparkling water, and Club-Mate ('kloob mah-tea') ice tea, made with extract of the South American maté plant, caffeine and tannins, and is popular with local hipsters as it comes in a screw top bottle so you can hiply tote it around (or drink to just below the top label and top it up with wodka).
Crime & Safety
Berlin is a relatively calm and safe place. Instances of petty crimes are low compared to other Western European capitals, though you shoulds still always keep an eye on your valuables and never leave bags, wallets and mobile phones unattended. Just like anywhere else, be careful when walking in unlit streets late at night. Race-related hassles seldom occur in Berlin's touristed central areas.