The best way to target this clientele would be to come up with an effective way to reach out to these people, first you want to know the statistics about the countries that most tourist who visit Paris come from. This will enable you to know which form of advert should you use and more so it will help you determine the content of your advert. If it's a video advert for example you will be able to know what scenes should be in the video and which sites should you you use to post your advert.