Teatro Principal, Historic theatre in Puerto Real, Spain

Teatro Principal occupies the end of a rectangular block in Puerto Real's orthogonal historic centre. Two rectangles make up the plan: the larger, bounded by three street facades, holds the vestibule, horseshoe-shaped auditorium and stage; the narrower one houses auxiliary and service spaces and separates the theatre from the neighbouring Casino. Load-bearing walls and timber horizontal structures support the building, and the current capacity is 412 seats.

Construction began in 1856 under architect Manuel García del Álamo and opened to the public in January 1859. It stands today as one of the oldest continuously operating theaters in the Andalusia region.

The theatre's name changed with the political tides: it opened in 1859 as Teatro de Isabel II, later became Teatro del Príncipe Alfonso and Teatro de La Libertad, before settling on Teatro Principal. Since 1984 it has been municipal property, and it now hosts all kinds of cultural events.

The theatre sits at the end of a rectangular block in the orthogonal street grid of Puerto Real's historic centre, with its rear facing the Paseo Marítimo. The hall is reached through the lobby along the main axis; the former Casino next door now holds workshops, dressing rooms and a small cinema. The 1989-1993 works added an orchestra pit and a projection booth.

The theater later acquired the neighboring Casinillo building, adding extra cinema rooms and workshop spaces for cultural activities. This expansion increased the venue's ability to host different types of artistic experiences and performances.