LIMA: This Peruvian city is home to a wildly diverse food scene, with dishes that include causas — mashed potatoes stuffed with various delectable fillings — and Conchitas a la Parmesana — fresh scallops topped with melted Parmesan and lime. A must-try here is the ceviche, which includes incredibly fresh fish marinated in a mix of salt, red onions, chili peppers, and lime juice.