Built in the fourth century BC on the orders of Alexander the Great, it was here that Marc Antony and Cleopatra lived together, Eratosthenes measured the circumference of the Earth, and the Julian calendar was invented. Your guide explains its history and leads you through its most remarkable sites. Start with a visit to the Greco-Roman Museum, where you study antiquities from the third century BC, including the sculpture of Apis in black granite and the sacred bull of the Egyptians. Continue to the impressive Catacombs of Kom el Shoqafa, hewn into a cliff, where you see a blend of Pharaonic and Roman art. It is then time to see the exterior of the medieval Citadel of Qaitbay, renowned for its spectacular sea views and built on the site of one of the 7 Wonders of the Middle Ages. After lunch you complete your day with a visit to the remains of the Roman amphitheater and a stroll along the gardens of Montaza Palace, once the summer resort of the Egyptian royal family.