Rosslyn Farms, PA

Rosslyn Farms is an Allegheny County borough west of Pittsburgh, founded in 1902 by the Chartiers Land Company and developed by William Hayes Parrish. The borough’s scale is part of the story: about 0.6 square miles, with roughly 194 homes and a community center that serves as its meeting and recreation hub. Parrish’s descendants still live here, tying the present-day borough to the family behind its first development. Rosslyn Farms is a small Pittsburgh-area municipality with a tightly drawn map and a clear origin story: company land, one developer, and a neighborhood that became a borough.