“…Nevertheless the latter also require large amounts of space (in the form of beaches, scenery, forests, mountains, etc) which can make them rather land intensive (Nowak and Sahli, 2007 Considering thus the large diversity in the conditions of production of the tourism product's segments or sub-segments and given that nowadays most of them can be exported and imported iv , it seems highly unrealistic that each country could be competitive for all of them and could specialize in the whole "product-system". To the best of our knowledge, all studies on tourism specialization (see for example Peterson, 1988;Jensen and Zhang, 2006;Algieri, 2006) have only focused on one particular segment of the product-system, namely the services provided to international inbound visitors by the destination country (accommodation, food and drink, local excursions and sightseeing tours, cultural and sporting events, other entertainment, etc. )…”