Four Mile Run is officially part of Greenfield, according to the planning
map. But it might as well be on a different continent. It's a tiny
and almost inaccessible East European enclave in a narrow hollow. "This
is the best-kept secret in Pittsburgh," one resident told me, and he was
proud of his neighborhood's obscurity.
The neighborhood was spared from demolition when the Parkway was built
simply because the only way to run a freeway over the hollow was on a viaduct
high enough to miss most of the buildings.
Don't assume that you can drive on a street just because you see it on
the map. Here two streets in Four Mile Run intersect--and both of them
are stairways.
