Here's another way to look at it:
-John Harvard
One thing that is nearly always missing from film and television portrayals of ancient city life is advertising. Fortunately the lost city of Pompeii furnishes many examples:
"AD CVCVMAS"..."This way to the wine jars!"
Goat's milk dairy. Send me a pot of cheese!
...or maybe I'll get some milk for the puppy.
Metalworker's shop
"Salve, citizen! Which way to the---oh, I see it's this way..."
In light of this, we can imagine a prominent statue of Epicurus in Athens with perhaps some useful directions. "The Garden School, Dipylon road, etc." And then at the turning that leads to the garden, a corresponding statue to let them know they found the right place.