Now, Catherine the Great isn’t the kind of leader Helen Mirren has played in the past.
Mirren is on board Catherine the Great as executive producer as well as star.
The limited series is still shooting in Russia, Latvia, and Lithuania, taking advantage of palaces to create an atmosphere fitting for the series.
(In an interesting historical note, the real Catherine wasn’t actually Russian, but rather born in an area of the Kingdom of Prussia that is now Poland.)