Every city is a palimpsest, but Malaga takes it to an extreme. The walls of its Phoenician ur-city are visible in the basement of the Picasso Museum. The best-preserved Moorish citadel in Spain is located next to the Roman theater, which was rediscovered in 1951. The nearby caverns of Nerja provided refuge to humans 30,000 years ago and modern tourists alight along the Costa Del Sol during the eight-month-long summer season. Cruise guests can visit the old castles, the museums, and the beaches. Or chew some scenery with a Malaga sweet wine and a plate of tapas.