It is about 11am and we are at the Nairobi National Park, where the wild meets the city, this park is known to be the only Wildlife park in the world located within a capital city. On this day we, the Switch Media join the world in celebrating this year`s United Nations World Tourism Day under the powerful theme:Tourism and Sustainable Transformation. Njeri uses the opportunity to call upon Kenyans to visit as many national wildlife parks as they can. ” Sustainable tourism is all about ensuring that tourism does not have negative impacts to the environment and natural resources that we have. Entry point to the Nairobi Animal OrphanageAccording to Esther, irresponsible tourism and new payment methods are some of the challenges facing Kenya Wildlife Service.