Photo Map for Google Photos is an app that lets you see where each photo on your phone was taken by showing you visually on a map. It's a great resource for remembering all the different places you've visited throughout your life.
It should be noted that Photo Map for Google Photos works alongside Google Photos and Google Drive. Because of this, you'll have to have your photos stored in Google's cloud services in order to access the geolocation information for each photo.
Once you link your accounts with Photo Map for Google Photos, the app will place each one of your photos on a map. Plus, if you tap on a specific location, you can open a gallery to see all the photos you've taken there.
With Photo Map for Google Photos, you can organize all your photos according to where they were taken. It's a great way to see all the places you've traveled and where you have yet to go.