The Imperial Mariinsky Theatre and its predecessor, the Bolshoi Kamenny Theatre, hosted the premieres of many of the operas of Mikhail Glinka, Modest Mussorgsky, and Pyotr Ilyich Tchaikovsky. At the behest of the theatre director Ivan Vsevolozhsky, both the Imperial Ballet (ballet arrived at the Mariinsky theater in 1870) and the Imperial Opera were relocated to the Mariinsky Theatre in 1886, as the Bolshoi Kamenny Theatre was considered unsafe. It was there that the renowned choreographer Marius Petipa presented many of his masterpieces, including such staples of the ballet repertory as "The Sleeping Beauty" in 1890, "The Nutcracker" in 1892, "Raymonda" in 1898, and the definitive revival of "Swan Lake" (with Lev Ivanov) in 1895.