[View] Temple of Heaven Park in the Ming and Qing generations is the place where emperors sacrificed the emperor and prayed for the grains. The Temple of Heaven is the general name of the two altars of Qiuqiu and Qigu. There are two altar walls, forming the internal and external altars, and the altar wall is south and north, symbolizing the place of the heaven. The main buildings are in the inner altar, the Qiqiu altar is in the south, the Qigu altar is in the north, and the second altar is on a north-south axis, with a wall in the middle. The main buildings in the Qiqiu altar are the Qiqiu altar, the imperial palace, etc. The main buildings in the Qiqiu altar are the Year of Prayer, the Emperor's Palace, and the Year of Prayer Gate.