Photo locations are the responsibility of the photo owner, and Google is not the owner of the photos.
Now that you have a Panoramio account, you are free to offer corrections (see the "Misplaced? Suggest new location" link to the right of the photo) and/or comments to incorrectly mapped photos suggesting they be corrected. There is nothing anybody here can do to help, at least not without specific information about specific photos (and then, all we can do as users is make the same suggestions you can).
Tom