Cleopatra: Mother, Mistress, Murderer, Queen

Of the Seven Wonders of the Ancient World, the Pyramid is the only one to survive. Many believe that even with our 21st-century technology, we could not build anything like it today. Based on the most up-to-date research and the latest archaeological discoveries, here is how the Pyramid came to be.

On the mythical site of Saqqara, the Apis bulls were buried for more than a thousand years in the immense underground necropolis of the Serapheum. Discovered in 1850 by the French Egyptologist Auguste Mariette, this place shelters a treasure of which a part is preserved in the Louvre. The collapse of the ceiling of one of the galleries had however prevented the archaeologist from venturing into the entire necropolis. More than 170 years later, the museum's Egyptologists are continuing the work of their famous predecessor. Investigating the cult of the Apis bull and the mysterious rituals that surrounded it, the team is especially looking for access to the unexplored parts, which have at least eight burial chambers, with the hope of finding intact tombs.

It is possible that only one per cent of the wonders of ancient Egypt have been discovered, but now, thanks to a pioneering approach to archaeology, that is about to change. Dr. Sarah Parcak uses satellites to probe beneath the sands, where she has found cities, temples and pyramids. Now, with Dallas Campbell and Liz Bonnin, she heads to Egypt to discover if these magnificent buildings are really there.

A study of the ruined Egyptian pyramid of the 4th dynasty pharaoh Djedefre, including evidence from a ten-year excavation which supports new theories about his reign and the pyramid's importance.

With more than seven million visitors a year, its massive structure and awesome architecture testify to the genius of ancient Roman building techniques, earning it a place not only among UNESCO's World Heritage sites but as one of the new seven wonders of the world. The Roman Colosseum is an emblem of the power of a bygone empire.

1960s Egyptian documentary showing scenes of local life along the banks of the River Nile, with narration by Salah Jahin

Rome, 2000 years ago was the world's first ancient megacity. In a world where few towns had more than ten thousand inhabitants, more than a million people lived in Rome. How did they manage without all the technologies of our modern cities? How did they bring in enough food to sustain the population? How did they house them? How did they maintain law and order? How did they make this city work?

Up to one million gladiators are thought to have died in arenas across the Roman Empire. And, although fascination with gladiators has been high, the details of their lives and deaths remain fragmentary. Now, with the discovery of an ancient Roman burial site containing 80 skeletons thought to be gladiator warriors, National Geographic recreates the world of the Roman arena and how six gladiators lived, fought and died.