You probably already know that the photos you take with your iPhone are automatically tagged with the location where you took them, and this information is pretty clearly displayed in the “Moments” section of the new iOS Photos app above each grouping of photos.
What you may not have realized, however, is that you can easily view this information on a map simply by tapping any of these headings with a location name.
This will take you to a map view that will show you thumbnails of your photos based on the location information stored in each.
You can even zoom in and out from here, allowing you to view groupings of photos in more specific locations, and tapping on a thumbnail will bring you to a view of only the grouping of photos taken at that specific location.
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