Detail of the north gate of Tiantan Park ( The Temple of Heaven) in Beijing. It is rounded as Heaven was considered round. Left and south of this wall is the largest structure, “Qiniandian” or “Hall of Prayer for Good Harvests”. There are thousands of ancient pine and cypress trees nearby, including a 500 year old Juniper known as “Nine Dragon Juniper”. This is a large green oasis in a city of about 18 million.