Take a day trip from Cairo to Alexandria to explore the “Pearl of the Mediterranean” and the second-largest city in Egypt. Begin at the Catacombs of Kom El Shoqafa, an archaeological site that was once considered to be one of the Seven Wonders of the Middle Ages. Follow with a visit to Pompey's Pillar, a Roman column and one of the largest ancient monoliths. Stop by the Qaitbay Fort, which once served as a strong fortress against naval attacks, before ending the day at Bibliotheca Alexandrina, one of the largest and most significant libraries of the ancient world.