Credits: data is credited to “© OpenStreetMap contributors”. The data is available under the Open Database License. | Graphics, adaptation and code are mine and are licensed under the Creative Commons Attribution-ShareAlike 2.0 license (CC BY-SA 2.0).

This is what today the square looks like.

Resources:

• A website dedicated to Hermannplatz
• A website with the history of Karstadt in Hermannplatz.