Sacriligeus?

Youre "playing" the future lord of the world in this game - in 90% of all cases your dinasty or empire will be the one who writes history so they will say what is "sacriligeus" (anything your enemies have done to you and your people) and what is "not sacriligeus" (anything you have/are/will be doing)

Now seriously most of the time some empires or kingdoms would have destroyed these "buildings" - the Romani Barbaroi destroyed most of Karthadast and any culture that got into there path. The epirotes plundered the royal makedonian tombs, and there are many such cases in history...

And like it is said "History is written by the victor." (does anyone know the latin or greek term for it?) So don't hesitate to do what you must do for your empire and your people.