Peak-season visitor multiplier across ~7,900 comuni, from ISTAT. Pan and zoom the map, or search a place to see its figure and open its full profile.
How it’s built. The comune's busiest month's tourist-accommodation nights spent (presenze), divided by the number of days in that month, divided by the comune's resident population (comuni.json, most recently published year — one year newer than this metric's own 2024 tourism figures, a real vintage mismatch). Reads as: on an average night in this comune's busiest month, there are about this many times as many overnight tourists present as there are residents. Same source and year-selection reasoning as the seasonality index above.