Explore details about location Diagonal 30. Diagonal 30 is a location situated within the Cartagena de Indias alongside other areas such as Avenida Santander; Carrera 1, Transversal 71D, Transversal 45. Additionally, some smaller parts of Diagonal 30 include specific areas like Avenida El Bosque, Transversal 37 adding to the diversity of its landscape.