If you took the photos without geo-tagging turned on, there's no way for you to get the information you need from those photographs.
However, if geo-tagging was turned on at the time you took the photos, you can read the info like so:
Windows
- Right click on the photo, choose Properties (alternatively, select the file and press Alt+Enter)
- Switch to the Details tab and you should see the GPS co-ordinates on that pane, under the GPS section.
Image credit: makeuseof.com - Alternatively, you could use ExifDataView to read this information.
Mac OS / *nix
- Download and install ExifTool.
- Run
exiftool <image.jpg> | grep GPS