Berlin is a city that defies definition - it's as if there were four cities there simultaneously: 1) Medieval Berlin, the historic center of Slavic trade in the middle ages, where Celts and Germanic tribes crossed paths, crossed swords, and eventually crossed purposes with the Austro-Hungarian rule of the Habsburgs, as the Kingdom of Prussia rose to prominence. 2) Pre-WW2 Berlin, its trendy, sophisticated arts & culture juxtaposed with its beastial brutality to non-Aryan "tribes" of people. 3) Post WW2 divided Berlin, occupied by 4 different countries (none of them German), with West Berlin being an island of prosperity in a sea of communist impoverishment. 4) Modern united Berlin, gleaming with brilliant architectural design and clean as a whistle.
What follows are photos without comment, but I trust you can see the different sides of Berlin in the images below:
