In which region of France was the opera Sabinus first performed ?
Sabinus (opera):  The opera had its first performance at Versailles on 4 December 1773 in the presence of King Louis XV, before transferring to the Paris Opéra on 22 February 1774. Palace of Versailles: The Palace of Versailles, Château de Versailles, or simply Versailles ( or ; ] ), is a royal château in Versailles in the Île-de-France region of France.
the Île-de-France region of France