The Temple of Heaven is considered the most holy of Beijing’s imperial temples. It has been described as “a masterpiece of architecture and landscape design”. The Temple of Heaven has also been listed as one of the World Cultural Relics by the UNESCO. The Temple of Heaven was built in the Ming Dynasty (AD 1420) by the emperor Zhu Di in the royal garden. Once a year, at winter solstice, the emperors came here to worship Heaven and to solemnly pray for a good harvest. Since his rule was legitimized by a perceived mandate from Heaven, a bad harvest could be interpreted as his fall from Heaven’s favor and threaten the stability of his reign. So, it was not without a measure of self-interest that the emperor fervently prayed for a very good crop. The design of the Temple of Heaven complex, true to its sacred purpose, reflects the mystical cosmological laws believed to be central to the workings of the universe. Both the overall arrangement and the buildings themselves reflect the relationship between sky and earth, the core of understanding of the Universe at that time.