Some great photos are possible from the top of the Rock: You can capture Gibraltar, Spain’s Costa de Sol, the African coast and the spot where the Mediterranean meets the Atlantic from a height of more than 400 meters. Then explore the Tower of Homage, all that remains of an 11th-century Moorish castle, or admire stalagmites in St. Michael’s Cave. If you are up for a strenuous two-hour hike, ascend the Rock via the Mediterranean Steps.