Oktoberfest, 1,300+ breweries, Berlin Wall reunification, and a culture built on Ordnung (order), precision, and Gemütlichkeit.
World's largest folk festival. Munich, 2 weeks (Sep-Oct). 6M+ visitors. Traditional Bavarian dress (Dirndl/Lederhosen). Beer tents, rides, music. 1L beer (Maß): €15.
Christmas markets (Weihnachtsmärkte) nationwide. Advent wreaths, Stollen (cake), Glühwein. Very family-oriented. Dec 24 = main celebration (not 25th).
Rhineland (Cologne, Düsseldorf) goes crazy! Feb/Mar. Costumes, parades, Kamelle (candy throwing). "Alaaf!" in Cologne, "Helau!" in Düsseldorf.