We love Italy
UNESCO World Heritage sites is one of the biggest countribution when it comes to tourism of one country. This has a major impact in the promotion of one country, so you are lucky enough if you have one or more Heritage sites in your own land. Luckily, Italy got the title as the most UNESCO World heritage Sites in the world. With their 47 Cultural World Heritage Sites and 4 Natural World Heritage Sites, they've got the number one spot. While China and Spain got the second and third spot respectively.
if you take a look at the Web, check the specialized websites