Grand Cairo, which seems to have succeeded Memphis, is built on the other side of that river.(265) The castle of Cairo is one of the greatest curiosities in Egypt. It stands on a hill without the city, has a rock for its foundation, and is surrounded with walls of a vast height and solidity. You go up to the castle by a way hewn out of the rock, and which is so easy of ascent, that loaded horses and camels get up without difficulty. The greatest rarity in this castle is Joseph’s well, so called, either because the Egyptians are pleased with ascribing what is most remarkable among them to that great man, or because such a tradition has been preserved in the country. This is a proof, at least, that the work in question is very ancient; and it is certainly worthy the magnificence of the most powerful kings of Egypt. This well has, as it were, two stories, cut out of the solid rock to a prodigious depth. The descent to the reservoir of water, between the two wells, is by a staircase seven or eight feet broad, consisting of two hundred and twenty steps, and so contrived, that the oxen employed to throw up the water, go down with all imaginable ease, the descent being scarcely perceptible. The well is supplied from a spring, which is almost the only one in the whole country. The oxen are continually turning a wheel with a rope, to which a number of buckets are fastened. The water thus drawn from the first and lower-most well, is conveyed by a little canal into a reservoir, which forms the second well; from whence it is drawn to the top in the same manner, and then conveyed by pipes to all parts of the castle. As this well is supposed by the inhabitants of the country to be of great antiquity, and has, indeed, much of the antique manner of the Egyptians, I thought it might deserve a place among the curiosities of ancient Egypt. Strabo speaks of a similar engine, which, by wheels and pulleys, threw up the water of the Nile to the top of a very high hill; with this difference, that, instead of oxen, a hundred and fifty slaves were employed to turn these wheels.(266) The part of Egypt of which we now speak, is famous for several rarities, each of which deserves a particular examination. I shall mention only the principal, such as the obelisks, the pyramids, the labyrinth, the lake of Mœris, and the Nile. SECT. I. THE OBELISKS.—Egypt seemed to place its chief glory in raising monuments for posterity. Its obelisks form at this day, on account of their beauty as well as height, the principal ornament of Rome; and the Roman power, despairing to equal the Egyptians, thought it honour enough to borrow the monuments of their kings.