During the Ming Dynasty, all cities in China were equipped with a bell tower and drum tower. The Drum Tower in Xi'an was built in 1380 and consisted of a huge drum located inside the tower, which was beaten at dusk to inform everyone of the approaching hour. The bell tower too was initiated for the same purpose, with the bell rung to inform people of dawn approaching. The two towers are located within the city wall and are enhanced with many vintage architectural features.