In Mexico pyramids were found everywhere. Cortez, in a letter to Charles V., states that he counted four hundred of them at Cholula. Their temples were on those "high-places." The most ancient pyramids in Mexico are at Teotihuacan, eight leagues from the city of Mexico; the two largest were dedicated to the sun and moon respectively, each built of cut stone, with a level area at the summit, and four stages leading up to it. The larger one is 680 feet square at the base, about 200 feet high, and covers an area of eleven acres. The Pyramid of Cholula, measured by Humboldt, is 160 feet high, 1400 feet square at the base, and covers forty five acres! The great pyramid of Egypt, Cheops, is 746 feet square, 450 feet high, and covers between twelve and thirteen acres. So that it appears that the base of the Teotihuacan structure is nearly as large as that of Cheops, while that of Cholula covers nearly four times as much space. The Cheops pyramid, however, exceeds very much in height both the American structures. Señor Garcia y Cubas thinks the pyramids of Teotihuacan (Mexico) were built for the same purpose as those of Egypt. He considers the analogy established in eleven particulars, as follows: 1, the site chosen is the same; 2, the structures are orientated with slight variation; 3, the line through the centres of the structures is in the astronomical meridian; 4, the construction in grades and steps is the same; 5, in both cases the larger pyramids are dedicated to the sun; 6, the Nile has "a valley of the dead," as in Teotihuacan there is "a street of the dead;" 7, some monuments in each class have the nature of fortifications; 8, the smaller mounds are of the same nature and for the same purpose; 9, both pyramids have a small mound joined to one of their faces; 10, the openings discovered in the Pyramid of the Moon are also found in some Egyptian pyramids; 11, the interior arrangements of the pyramids are analogous. ("Ensayo de un Estudio.") It is objected that the American edifices are different in form from the Egyptian, in that they are truncated, or flattened at the top; but this is not an universal rule. "In many of the ruined cities of Yucatan one or more pyramids have been found upon the summit of which no traces of any building could be discovered, although upon surrounding pyramids such structures could be found. There is also some reason to believe that perfect pyramids have been found in America. Waldeck found near Palenque two pyramids in a state of perfect preservation, square at the base, pointed at the top, and thirty-one feet high, their sides forming equilateral triangles." (Bancroft's "Native Races," vol. v., p. 58.) Bradford thinks that "some of the Egyptian pyramids, and those which with some reason it has been supposed are the most ancient, are precisely similar to the Mexican teocalli." ("North Americans of Antiquity" p. 423.)