All places in Athens
Acharnes, also known as Menidi, is a municipality in the East Attica regional unit in Greece. With 108,169 inhabitants, it is the ninth most populous municipality in Greece. It lies just north of the Athens urban area.
Source: Wikipedia
Although long walls were built at several locations in ancient Greece, notably Corinth and Megara, the term Long Walls generally refers to the walls that connected Athens' main city to its ports at Piraeus and Phaleron.
Source: Wikipedia