Teatro La Fenice is a historic opera house in Venice, Italy. It is one of "the most famous and renowned landmarks in the history of Italian theatre" and in the history of opera as a whole. Especially in the 19th century, La Fenice became the site of many famous operatic premieres at which the works of several of the four major bel canto era composers—Rossini, Bellini, Donizetti, and Verdi—were performed.

An opera house is a theater building used for performances of opera. Like many theaters, it usually includes a stage, an orchestra pit, audience seating, backstage facilities for costumes and building sets, as well as offices for the institution's administration.