Fujian Tulou, also known as Hakka Tulou, is a type of unique residential architecture found in the mountainous regions of Fujian Province in southern China. These structures were built by the Hakka people, a Han Chinese subgroup, between the 12th and 20th centuries.

Fujian Tulou are large, round or square buildings constructed with earth and wood. They are typically three to five stories high, with the upper stories designed for living quarters and the lower stories serving as storage rooms and defensive spaces. The walls of Fujian Tulou can be up to six feet thick and are made from a mixture of clay, sand, and rice straw.

Fujian Tulou are known for their exceptional durability, as well as their ability to withstand earthquakes and typhoons. They also feature unique architectural elements such as intricate carvings, hidden passageways, and elaborate courtyards.

In 2008, Fujian Tulou was recognized as a UNESCO World Heritage Site, as it represents an outstanding example of a type of building and housing that is unique to a specific culture and region. There are over 20,000 Fujian Tulou still standing, with some dating back over 1,000 years. They are an important part of China's cultural heritage and continue to be a popular tourist attraction.