This building and the ways that pass through it need updating/correction. Also the position seems not correct. (I know it's difficult)

waterway shape completely wrong - connects two waterways that cross each other at different levels

To be checked if the two waterways are not in reality connected

The indoor tagging of the Basilica should be redone according the Simple Indoor Tagging approach (osm.wiki/Simple_Indoor_Tagging)

Geometry and position need correction

Villaggio della Pace: all access values to be reviewed (should be acess=private); missing external fence

Cemetery buildings missing

In this area all imported buildings are shifted about 5m northwards with respect to PCN2006 and to uploaded GPX tracks

This street has a combined bi-directional foot-cycle-lane one the right-hand side. Taggging is not correct.