A city or a geographical area with corners forming only 45, 90, and 135 degree angles.?

Question

Not sure this is a proper historical question, more like geographic, but since I'm asking about both current and historical cities, here it is. Preamble: In the industry I work in we deal with certain geometrical shapes. Many designs have this nice feature that all shapes are rectangles and they always meet at 90-degree angles. The whole industry calls such designs "Manhattan" because much of Manhattan consists of rectangular blocks and streets/avenues there meet at 90 degree angles. Recently a different kinds of designs become increasingly important. They consist besides rectangles of triangles and trapezoids with 45 degree angles that meet at 45, 90, or 135 degree angles. These designs naturally should be named somehow, analogously to Manhattan. The question: are there / were there any well-known cities with corners forming only 45, 90, and 135 degree angles? The blocks may include octagons or 45-degree trapezoids, etc. The only candidate that we have is Barcelona: the new part of that city consists of octagons and squares, and the streets in that part of the city often form the prescribed angles. Unfortunately, this applies only to a relatively small part of Barcelona...

Answer 1

"Four Corners" the area where 4 states join in one point, Arizona, New Mexico, Colorado and Utah

The 4 state boundaries are straight lines, each perpendicular to the adjoining state, forming 4 90 degree angles.