The classified ads company Xrysi Eukairia (Χρυσή Ευκαιρία) asked us to make a digital representation of the polygons (boundaries) of the neighborhoods and settlements in Athens and Thessaloniki for greater specialization in the registration and search of real estate ads. Thus, polygons were defined and designed in order to better approach the neighborhoods, as they are described and called by the locals. The result was a file containing 1000 polygons of the neighborhoods in 89 Municipalities of Athens and Thessaloniki, as well as the polygons of the settlements in the rest of the Prefectures of Attica and Thessaloniki.