The design is based on the design of court tower in Berlin which was demolished at the end of the 60s.
For more information, visit:
https://de.wikipedia.org/wiki/Geschäftsgebäude_für_die_Zivilabteilungen_des_Landgerichts_Berlin_I_und_des_Amtsgerichts_Berlin_I
WARNING! I have to divide the model into 4 parts because the file is huge