The pyramid was quite modern, and owed its erection to Ahuitzotl, who for two years employed upon it an immense force of men, bringing the material from a distance of three or four leagues. It was completed in 1486, and consecrated with thousands of victims. The rich and devout brought, while it was building, a mass of treasures, which were buried in the mound as an offering to the gods, and served subsequently as a powerful incentive for the removal of every vestige of the structure. The present cathedral occupies a portion of the site.5
The appearance of the city was likewise improved by terraces of various heights serving as foundation for the dwellings of rich traders, and of the nobles who were either commanded to reside at the capital or attracted by the presence of the court. Their houses were to be seen along the main thoroughfares, differing from the adobe, mud, or rush huts of the poor, in being constructed of porous tetzontli stone, finely polished and whitewashed. Every house stood by itself, separated by narrow lanes or by gardens, and inclosing one or more courts. Broad steps led up the terrace to two gates, one opening on the main street, the other on the back lane or canal. The terrace platform was particularly spacious in front, where occasionally a small oratorio faced the entrance. The façade was adorned with elegant cornices and stucco designs of flowers and animals, often painted in brilliant colors. Balconies were occasionally to be seen, supported on monolith columns without base or capital, though with incised ornamentation; but they were not common, owing to the prevalence of flat roofs surrounded by battlemented and even turreted parapets. Behind them rose flowering plants, arranged in pots or growing in garden plots, and aiding to render the spot attractive for the family gathering in the evening. Flower-gardens might be seen also in the courts, with a sparkling fountain in the