where was rio bravo filmed

The film "Rio Bravo" was primarily filmed at Old Tucson Studios, located west of Tucson, Arizona. This American movie studio and theme park provided the authentic Western sets used in the movie. In addition to Old Tucson, certain scenes were shot in Sonora, Mexico, and the Sierra de Organos rock formations in Zacatecas, Mexico. Some interior scenes were filmed at Warner Bros. Studios in Burbank, California. Notably, the final fight scene was shot in the Sierrita Mountains near Tucson. Overall, the film used a mix of locations in Arizona and Mexico for its iconic Western setting.