Fujian tulou consists of 46 buildings constructed between the 15th and 20th centuries over 120 kilometers in Fujian province. [Photo/Xinhua]

Fujian Tulou, which dates back to Song and Yuan dynasties, is a type of Chinese rural dwellings of the Hakka people in the mountainous areas in East China's Fujian Province. 

Standing at 5-6 stories tall, some Tulou can house up to 800 people, or 30-40 families. The layout of Fujian Tulou followed the Chinese dwelling tradition of "closed outside, open inside" concept, with an enclosure wall with living quarters around the peripheral and a common courtyard at the center. 

In 2008, 46 of them were added to the UNESCO World Heritage List as a cultural site, now described as "a little kingdom for the family" or "bustling small city."

Interior structure of Huaiyuan Tulou [Photo/Xinhua]