Overview map of Pompeii.
Based on the 1:5000 map of Pompeii by Hans Eschebach.
Published in: Liselotte Eschebach (ed.):  Gebäudeverzeichnis und Stadtplan der antiken Stadt Pompeji. Cologne et. al: Böhlau 1993.
The map shows 

town wall,
gate and tower names,
streets,
street names,
regio boundaries,
regio numbers,
insulae and
insulae numbers,
meter scale,
English titles and
German titles.
Each feature has its own layer, which may be enabled/disabled.
Own work
WolfgangRieger