Not sure how to get to this. I tried Android (no Play store updates since Aug 23rd) and Plex Web and don’t see this anywhere.
The switch on this feature has been flipped just a few hours ago.
So currently, none of your photos will have any location names attached to it.
Do this:
In Plex Web go to Settings - Server - Scheduled Tasks
and see if this item appears at the end of the list: “Fetch missing location names for items in photo sections”
If it appears, ‘check’ it (if it isn’t already)
If it does not appear, do first restart your Plex Server
and after a few minutes close your web browser and re-open it and load the web app fresh from this URL: https://app.plex.tv/desktop
Afterwards, ‘edit’ your photo library, go to the ‘Advanced’ tab and verify that “Save location names” is checked
Now you are set.
You can wait for the Server maintenance period
or
you can ‘Refresh Metadata’ for your photo library
Both will start the location-lookup process.
Personally, I recommend going for the first option.
Keep in mind that this will only work for photos which have geographic coordinates embedded in their files. So this requires the camera to have GPS.
I think the blog post is a bit ahead of the deployments.
@OttoKerner said:
The switch on this feature has been flipped just a few hours ago.
So currently, none of your photos will have any location names attached to it.Do this:
Thanks! I had to restart the server to get the “Fetch…” option to show-up and it was already checked.
I’m just waiting for the metadata refresh, but at least I now have the ability to filter by “Places” even though there are no places to select from yet.
Dang, wish I could restart my server remotely. I have to wait 4 more hours. 
Luckily, mine is running on a Synology NAS that I have remote access to.
Strange that after the metadata refresh completed, I still don’t get any location information or choices when I try to filter by “Places”. But, the tagging seems to have worked for the first time! And sorting by “Date Taken” actually works now for the first time ever!
@OttoKerner said:
You can wait for the Server maintenance period
or
you can ‘Refresh Metadata’ for your photo library
Both will start the location-lookup process.
For me, Refresh Metadata, Scan Library Files, even the Plex Dance didn’t prompt Plex to start gathering Places. ‘Analyze’ finally kicked it off.
