Where am I on this map?
'Mappa' — MAP-pa. Double 'p' briefly held; stress on the first syllable.
Ask a tourist office worker or passerby to point to your location on a paper map. Also the first thing to establish before trying to navigate.
'Dove sono' means where am I (literally where are I). The verb 'essere' in the first person singular is 'sono'. 'Su questa mappa' (on this map) — 'su' is the preposition for location on a flat surface. A key follow-up: 'Può indicarmi con il dito?' (Can you point with your finger?)
Può indicarmi la nostra posizione?
Can you point out our position?
Polite formal request using 'Lei'.
Siamo vicini al centro?
Are we near the centre?
Relative position question.
C'è un 'Lei è qui' sulla mappa?
Is there a 'You are here' on the map?
Look for the 'Voi siete qui' marker on Italian maps.
Italian tourist boards often provide free large-format fold-out maps with a clear 'Voi siete qui' (You are here) marker. These are available at APT offices, major museums, and the arrival areas of main airports and train stations.