By the year 2000 tourism will be the biggest industry in the world. Even now an estimated 750 million "tourists" generate a massive $2,000 billion annual expenditure on accommodation, catering, transport and souvenirs.<br/>Parr's timely investigation looks at tourism worldwide from the overcrowding of popular "honeypot" sites - famous locations whose success in attracting visitors ultimately diminishes the quality of the visitor's experience - to the inevitable culture clashes as developing countries become tourist destinations.