Catedral de Santa María in Cartagena

You're standing at the ruins of Cartagena's old cathedral, Santa María la Vieja. It sits on La Concepción hill, right in the old town. Take a look at those bare walls. This isn't a medieval ruin. The church was shelled in 1939, when Franco's Nationalist forces bombarded the city during the Spanish Civil War. It has stood abandoned ever since.