This thesis studies the work of two organisations working to prevent child sex tourism, Ecpat in Sweden and Resposta in Brazil. Issues dealt with cover how the organisations campaign and what messages they choose to focus upon. I have also looked closer at the Code of Conduct, a tool used by both organisations to make the tourism industry committed to the prevention of child sex tourism. I have further analysed advertisement material from Swedish travel agencies and made a quick exposé over the Brazil tourism advertisements since the 1960s.