And for its layout the city should have the Royal Court situated in the south, the Marketplace in the north, the Imperial Ancestral Temple in the east and the Altar to the Gods of Land and Grain in the west." Teotihuacan, near modern-day Mexico City, is the largest ancient grid-plan site in the Americas.
The city's grid covered 21 square kilometres(8 square miles).
The concept of a grid as the ideal method of town planning had become widely accepted by the time of Alexander the Great.
His conquests were a step in the propagation of the grid plan throughout colonies, some as far-flung as Taxila in Pakistan, The Etruscan people, whose territories in Italy encompassed what would eventually become Rome, founded what is now the city of Marzabotto at the end of the 6th century BC.
Costs for streets depend largely on four variables: street width, street length, block width and pavement width.