(This picture can be enlarged by clicking on it.)
One of the attractions of Xian, the ancient capital of China, is the Drum Tower. The Drum Tower, built in 1384, housed a large drum which was sounded at sunset to signal the end of the day. A similar tower on the opposite side of the city square contained a bell which was struck at dawn to signal the start of the day.
The picture above was scanned from a slide.
