Zichenau (region)
Regierungsbezirk Zichenau was a Regierungsbezirk, or administrative region, of the Prussian Province of East Prussia from 1939-45. It is also referred to as South East Prussia (German: Südostpreußen). The regional capital was Zichenau (Ciechanów).
Read more about Zichenau (region): History, Rural Districts