Kenya's historical sites are part of its cultural heritage and should therefore be conserved, and passed on to future generations. Most of the historic sites are conserved in order to preserve the national heritage which may include natural forests, extra ordinary stone arrangements, specific cultures and works of art. Such historical sites include Thimlich Ohinga and Kit Mikayi in Nyanza, Fort Jesus and the Khayas at the Coast and Mukurwe wa Nyagathanga in Central Kenya. The Thimlich Ohinga site is preserved due to its rich natural heritage including the history of the people who lived in the area over the years, the artifacts associated with the people and the natural trees (Thimlich Ohinga forest) which have remained intact mainly due to the existence of the stone structures. Many organizations including the National Museums of Kenya have come up with ways of conserving such sites.