Every time I go to Berlin, I'm quickly reminded why this is my favorite European city. As I get close to Alexanderplatz, I feel excited to be visiting the German capital again. The first time I visited the city was 7 years ago, and it’s amazing how much the city has changed in that short time: The Palace of the Republic is gone, the Hauptbahnhof has been completed, and the area around the parliament is getting nicer and nicer. Each time I visit Berlin, I get the opportunity to see something new I haven’t seen before, and this time was no exception: While we were walking near Postdamer Platz, we saw a small flyer talking about a watchtower, and indeed we found, hidden by a tree, one of the last remaining surveillance symbols of the GDR.