Religion has been one of the prime reasons for making enclosed outdoor space and it seems likely that sacred landscapes were venerated and sacred gardens made long before religious buildings were considered. Robert Louis Stevenson made a significant remark: 'I find I never weary of great churches. It is my favourite kind of mountain scenery'. (An Inland Voyage, p 35). Early civilizations designated certain areas as sanctuaries, for religious purposes, and bounded them with markers, fences and walls. Sir James Frazer gives much information on religious sanctuaries and sacred trees in The Golden Bough. In primitive societies the Earth Mother was one of the earliest deities. Her marriage with the Sky God produced life on earth.