Pisco dates from 1640, and its Plaza de Armas is a Spanish colonial treasure. Another treasure is the Ballestas Islands, an offshore cluster of rocky outcroppings teeming with seabirds, penguins, sea lions, dolphins and other wildlife. Many visitors take the opportunity to take a scenic flight over the huge, mysterious Nazca Lines pictographs etched into the nearby desert surface 2,000 years ago. …