地坛又称方泽坛,是古都北京的第二大坛。地坛始建于明代嘉靖九年,占地37.4公顷,是明清两朝帝王祭祀地祗的场所,也是中国现存最大的祭地之坛。中国古代,“天圆地方”的观念源远流长。因此,作为祭祀地祗场所的地坛建筑,最突出的一点,即是以象征大地的正方形为几何母题做重复运用。从地坛平面的构成到 Altar, also known as Fang Ze Tan, is the ancient capital of Beijing's second largest altar. Ditan was built in the Ming Dynasty Jiajing nine years, covers an area of ​​37.4 hectares, is the site of the Ming and Qing dynasties emperors sacrificial offerings, but also China's largest existing sacrificial altar. In ancient China, the concept of “heaven and earth” has a long history. Therefore, the most prominent point of the altar building as a sacrificial place is that the square which symbolizes the earth is reused for geometric motifs. From the composition of the altar to the plane