Together with historian Andreas Butter, HMUI Berlin portal visited and studied the centerpiece in the former East Berlin’s urban layout and the built environment of the former DDR (Deutsche Demokratische Republik) more broadly. The tour focused on the major urban project of the post-WWII era in East Berlin – the grand Karl-Marx-Allee (formerly Stalinallee) – with attention given to other projects executed at about the same time, notably the buildings by the principal architect of the Stalinallee, Herman Henselmann. The tour ended in Nikolaiviertel – one of the oldest, medieval parts of the city that has undergone extensive transformation, from reconstruction in late 1980s to its current role as a tourist area next to Berlin’s most iconic landmarks and most controversial construction projects.