Archaeologists said two light houses discovered in northwest China's Shaanxi Province were the largest of their kind in Neolithic China, Xinhua news agency reported.
The 4,000-year-old Shimao Ruins have two light house towers. One of the towers is 18 meters long, 16 meters wide and 4 feet tall, while the other is 11.7 meters long, 10 feet wide and 3 feet tall.
Shimao ruins were first found in 1976 in the form of a small town, and the region was understood that these excavations belong to the Neolithic period. Some local archaeological survey discovered more city walls last year.
The city was found to have inner and outer structures, and the walls surrounding the outer city extended over an area of 4.25 square kilometers.
Other findings from the site included a piece of mural, which archaeologists believe was the oldest in China.
The Shimao city ruins went down in history as one of the definitive archaeological finds of the century thus far in China.