Excessive tourism is the result of an increasing number of tourists in a particular area. It simply refers to the idea that there are too many visitors in a particular area. How much is too much is not always easy to determine, but there are some signs that the destination is suffering from over-tourism. Signs of over-tourism include pressures on local resources and facilities due to growing tourist numbers, changes in culture and loss of authenticity, deteriorating quality of life of the host community and feelings of irritation and anxiety about tourist presence. Barcelona is an attractive and desirable tourist destination in the Mediterranean, visited annually by a large number of tourists. As such, it has at its disposal numerous natural and social resources that, as tourist attractions, enrich its tourist offer. Precisely because of the large number of tourist arrivals, Barcelona is affected by the excessive effects of tourism on the environment and infrastructure, which can jeopardize its destination's image.