[GeekyBear]

Since this 2020 post, Apple's home grown map data has extended to all of the US and it's territories, Canada, Ireland, The U.K., Spain, Portugal, and Italy.

I believe Australia is the next addition.

https://www.justinobeirne.com/new-apple-maps-expansion-12

You can access the Apple Maps web interface through DuckDuckGo.

https://duckduckgo.com/?q=Rome+Italy&ia=web&iaxm=maps