Despite its long history, the Great Wall of China as it is exists today was constructed mainly during the mighty Ming dynasty (1368-1644). Like the Mongols, the early Ming rulers had little interest in building border fortifications, and wall building was limited before the late 15th century. In 1421, the Ming emperor Yongle proclaimed China’s new capital, Beijing, on the site of the former Mongol city of Dadu. Under the strong hand of the Ming rulers, Chinese culture flourished, and the period saw an immense amount of construction in addition to the Great Wall, including bridges, temples and pagodas. The construction of the Great Wall as it is known today began around 1474. After an initial phase of territorial expansion, Ming rulers took a largely defensive stance, and their reformation and extension of the Great Wall was key to this strategy.