There’s something about this particular bit of marshy woodland on the Northern European Plain that has engendered the best and worst in the human soul. Berlin was the capital of the Kingdom of Prussia, the German Empire, the Weimar Republic, the Third Reich, and reunified Germany. It has long been a world capital of art, culture, and architecture. It is also the highlight of many a European cruise. Abounding in such riches, Berlin is full of overwhelming choices. Try starting with the icons and follow your instincts — the Brandenburg Gate, Checkpoint Charlie, or the Jewish Museum, whose jagged architecture will leave you shaken and moved.