There are a lot in southern France. In Gonfaron near the Cote d'Azure, "Le village des tortues" is based around a rescue centre that can be visited. The local torts are Hermann'sMy young niece went pony trekking while in Corfu and she was amazed to see what she described as 'hundreds' of torts in the area they went to although that may be an exaggeration. I assume they were Greeks but unfortunately she hadn't taken her camera.