Considered the finest example of Byzantine architecture in the world, Hagia Sophia was constructed on a scale unprecedented in human history. Built in the amazingly short time of five years, it bears witness to an amazing scientific knowledge and a rich cultural heritage from the past.
At the dawn of the Christian era, Petra, capital of the rich kingdom of the Nabataeans, bordering the deserts of Arabia, Syria and the Negev, was absorbed by the Roman Empire and, after being sacked by the Bedouins, disappeared from the memory of mankind; but its secrets are gradually being revealed thanks to an enormous excavation work.
