Tourism is by definition a small fraction of overall global economic activity. Basically the only places which can really run on tourism have major geographical (Barbados, Andorra) or extraordinary historical (Venice, Kyoto) advantages, or both (San Francisco, Cusco).

My recommendation is that if you want to encourage tourism, change your mind. Build a great place to live and if you do a good job, you might get a boost in a century. I would call this "the Chicago model".