Jaca’s 11th-century cathedral is a formidable building, its imposing facade typical of the sturdy stone architecture of northern Aragón. It was once more gracefully French Romanesque in style, but a Gothic overhaul in the 16th century bequeathed a hybrid look. The interior retains some fine features, in particular the side chapel dedicated to Santa Orosia, the city’s patron saint, whose martyrdom is depicted in a series of mysterious murals.
