TEA and AECOM have just published the latest edition of the annual report devoted to the number of visitors in the most visited parks in the world. This 2009 data is obtained through several sources: financial reports, tourist agencies, statistics provided by the parks, … Since not all the parks report their visitor numbers, it is a very interesting report, however we must take into account the fact that in some cases, there may be a difference between this data and the real data.