Sorry but it’s been disabled by Apple,
Contacted Apple who responded with this:
I understand. Steven currently significant locations doesn't not provide the details of each location, this information is a background information for the system to remind important action you did with your device, like pictures taken in that location or similar. Well what I am saying is that with this feature Your iPhone and iCloud-connected devices will keep track of places you have recently been, as well as how often and when you visited them, in order to learn places that are significant to you. This data is end-to-end encrypted and cannot be read by Apple. It is used to provide you with personalized services, such as predictive traffic routing, and to build better Memories in Photos.
Great feature disabled and no intention to restore it.