The birthplace of the Gautama Buddha, Lumbini, is the Mecca of every Buddhist, being one of the four holy places of Buddhism. It is said in the Parinibbana Sutta that Buddha himself identified four places of future pilgrimage: the sites of his birth, enlightenment, first discourse, and death. All of these events happened outside in nature under trees. While there is not any particular significance in this, other than it perhaps explains why Buddhist have always respected the environment and natural law.