What is the first concentration camp that Gerta and her father are sent to in the graphic novel, What the Night Sings?

Theresienstadt is the first concentration camp and ghetto that Gerta and her papa are taken to, on German-occupied Czech land. It is a guarded camp with orderly buildings and barracks. It is used as a propaganda camp and the SS invite the Red Cross and film crews to witness periods where they temporarily improve the conditions.