The concern for environmental protection within an increasingly globalised international system has led to the planning of Transfrontier Conservation Areas, among which Peace Parks aim to achieve or maintain peace across borders. Based on the growing importance that tourism practice has for the sustainability of Peace Parks, this chapter reflects on how the tourism activity developed within Peace Parks can contribute to peacebuilding processes. This dynamic is addressed by analysing a case study, focused on the Great Limpopo Transfrontier Park. It shows that tourism has the potential to positively contribute to sustainability, creating better living conditions for the local population and, consequently, promoting the achievement of peace. However, it also shows that tourism may have the opposite effect if national interests dominate, if there is insufficient consultation of local communities' interests or if sensitive border and land-use issues are not overcome.