Which plan is characterized by rigid rectilinear street patterns and allocated public squares?

The plan characterized by rigid rectilinear street patterns and allocated public squares is the Gridiron Plan. This urban design structure is defined by its straight, intersecting streets that create a grid-like pattern. Such configurations facilitate navigation and organization within a city, effectively allowing for easy access to public squares and communal areas.

The Gridiron Plan has historical roots in ancient city planning, with notable examples like the plan of Manhattan in New York City. Its design promotes a sense of order and regularity, enabling efficient land use and infrastructure development. Public squares, placed at regular intervals or intersections within this grid, serve as social and civic focal points, fostering community interaction.

In contrast, the Organic Plan is more irregular and conforms to the natural landscape, lacking the structured organization of the grid. The Circular Plan typically involves a central point with concentric circles radiating outward, while the Radial Plan features streets that radiate from a central point like spokes on a wheel. Both of these plans provide distinct spatial experiences but do not exhibit the characteristic rigid rectilinearity or structured arrangement of public squares found in a Gridiron Plan.