Xiannongtan Park was first built in the 18th year of the Yongle Period in the Ming Dynasty (AD 1420). It was originally named the "Shanchuan Altar". Its general form took shape during the Jiajing Period (AD 1522-1566) of the Ming Dynasty, and underwent large-scale reconstruction during the Qianlong Period (AD 1736-1796) of the Qing Dynasty. It is the place where the emperors of the Ming and Qing dynasties offered sacrifices to the God of Agriculture and held plowing ceremonies. Its Taisui Hall is a huge single building built in the 18th year of the Yongle Period in the Ming Dynasty (AD 1420), which is now Beijing Ancient Architecture Museum.