Porte de Hal
Plamann's institute was located originally in the middle of Berlin near the castle in the Unterwasserstrasse. The situation was chosen because it was from this quarter that the pupils, children of the higher and richer classes, were expected to be drawn, and, for the most part, actually came. But there was no suitable playground attached, and the boys, to get fresher air, had to walk far through crowded streets. Hence in 1812 a new building was taken near the Halle Gate in the Wilhelmsstrasse (No. 130).