What opera house both housed the Paris National Opera and frequently featured Vasyl Slipak?
Opéra Bastille The Opéra Bastille (    ) (Bastille Opera House) is a modern opera house in Paris, France. Inaugurated in 1989 as part of President François Mitterrand’s “"Grands Travaux"”, it became the main facility of the Paris National Opera, France's principal opera company, alongside the older Palais Garnier; most opera performances are shown at the Bastille along with some ballet performances and symphony concerts, while "Garnier" presents a mix of opera and ballet performances.
Théâtre Graslin The Théâtre Graslin is a theatre and opera house in the city of Nantes in France. Created in a new district of the city in the late 18th Century by the local architect Mathurin Crucy and named after the owner of the land, Jean-Louis Graslin. Built in the Italian style, the auditorium holds 823 people.