Max Von Sydow's final film role.
A life-size replica of the school the Germans burned down in Kalavryta was constructed in the grounds of the old Athens Airport in Hellenikon.
The film is one of the most expensive productions ever mounted in Greece.
The Kalavryta town of 1943 - which was destroyed by fire- was recreated in the village of Sopoto in Achaea, Western Greece.
The Mascista VFX team responsible for all the elaborate CGI work in the feature has artists with previous stints in the Harry Potter films (2001-2011) and Inception (2010).