You'll want to browse the collections at C-189 Submarine Museum, Erarta Museum and Galleries of Contemporary Art, and Anna Akhmatova Literary and Memorial Museum. Saint Petersburg Conservatory, Yusupov Palace, and St. Isaac's Cathedral are monuments to see when you're exploring the area around Isadora Duncan Museum. You can catch a show at Mariinsky Theatre, Alexandrinsky Theatre, and Bolshoi Saint Petersburg State Circus.