Altmarkt seen from Neustadt, Picture 4, Edited Version, Dresden, Germany, 2011

The primary border between Altmarkt and Neustadt is the River Elbe, which actually flows from the Krkonose mountains in the Czech Republic. In the Czech Republic, it's known as the Labe. In any case, it gives you a clear enough view to get nice photos of the Altmarkt from the Neustadt side, and vice versa.