It's an old neighborhood that grew out of an even older one. Clarke Square developed in the late 1800s, when Walker's Point residents began moving west to new homes along the southern edge of the Menomonee Valley. They found a small square of public green space waiting for them, an untended park that would one day give the community its name. There has been a constant procession of groups through Clarke Square, but the neighborhood's most important quality has not changed at all: diversity.