The uniquely American one-mile grid, the relentless continental grid that organizes the megalopolis, is seen in contrast to the urban grids and the boulevards
Alternating sector of urban fabric and fields – with or without building objects – form the head of Boston. The neck, can seen as the result of the overlapping of different grids. Interventions made after World War II have deeply affected the morphology of Boston, erasing entire areas of the close-knit fabrid of the seventeenth and eighteenth centuries and replacing them with Modernist-inspired building developments.
The original plan of New Heaven contained elements that should both insure the survival of the original grid – an oversized nine-square grid (825 total square feet) with a common green in the center – while also generating a new order for its development, several diagonal streets leading outward from the core. The radial field system surrounding the nine-square grid persists in the plan of New Heaven today. However, this description represents only a simple, perceptual understanding of the city.
While the neutral geometric grid and the regular « beat » of intersections in the city of Chicago imply continuous movement, the accidents of the plan produce changing rythms and interruptions where movement stops.