Unlike Houston, Little Rock and Milwaukee, Washington's rational street grid-pattern is augmented -- and rendered visually richer and functionally more complex -- by overlaid patterns of diagonal ...

The existing concrete structure is laid out in a diagonal grid pattern—called a Morrow System—with bay spacing of roughly 30 ft squared. The system features round 40-in.-dia columns topped by ...

From the elegant bird-shaped design of Brazil's capital Brasilia, to the circles and intricate diagonal grid pattern of downtown Washington DC - some of the greatest urban spaces on Earth look ...