You can reach Concepción Castle either by taking the Panoramic Lift or by walking up the hill from the archway. On your path is this terrace named Plaza Puerta de la Villa. Linger here to savor the elevated view of the Roman Theatre, the city and the harbor. When you reach the summit, you will learn the castle is gone. No, your trek was not in vain. In its place is the Interpretation Centre of the History of Cartagena. You can also admire Torre Linterna. This stone lighthouse was built by the Arabs during the 9th century.