Explore details about location Oscar Castro. Oscar Castro is a location situated within the Rancagua alongside other areas such as La Capilla, Avenida Libertador Bernardo O'Higgins, Ruta 5 Sur. Additionally, some smaller parts of Oscar Castro include specific areas like Florencia, Terminal de Buses Interprovinciales O'Higgins, Avenida Grecia adding to the diversity of its landscape.