Cairo is the Capital of Egypt, one of Four Great Ancient Civilizations, and is also one of the oldest cities in the world. Situated on the top of Nile Delta, Egypt has 95% of the territory in the desert zone, and the fertile Nile runs through Egypt, bringing vitality to this largest desert in the world. The green zone formed by the Nile looks much like a ginkyo leaf, and Cairo is situated at the crossing of the petiole and the leaf surface. As the largest city in Africa, Cairo presents the crowded and low houses in yellow as the first impression of Cairo to the tourists. In this city with the population of 16 million, you can hardly find the city center, and the high buildings are sparsely distributed so that you can almost infer the prosperous zone of this city only from the people flow. In Cairo, wealth and poverty, grandness and dilapidation, modernity and classics coexist in harmony. Islamic buildings are densely studded in Cairo, and there are also ancient Egypt relics here and there in this city. There are well-proportioned minarets of mosques, as well as the crosses of the Christian churches arranged in rows. You can hardly find a word to describe this city.