When viewed from above, they resemble giant donuts carved into the landscape. From ground level, these houses look more like medieval fortresses than family homes. Their towering earthen walls, narrow doorways and spacious wooden interiors seem designed for defense rather than domestic life.
But behind these imposing facades lies one of the most striking examples of communal life in China.These massive earthen buildings, known as Fujian Tulou, have housed entire clans for generations, combining grandparents, parents, and children in a single structure. Built largely by the Hakka people in the mountains of Fujian province, they combined security, practicality and social cohesion in a way that still seems surprisingly modern.
Long before sustainable architecture became a design philosophy, Tolo builders were creating homes that fit into the landscape, made intelligent use of local materials and fostered an exceptional sense of community.
What is Fujian Tuolu and why were they built as circular houses?
The giant circular buildings scattered across the mountains of southeastern China are known as Fujian Tuoluo, a name that simply means “earth buildings.” While the circular examples have become their defining image, not every tolu follows the same outline.
Some are square or rectangular, but they all share the same basic purpose: to protect and house large, extended families.According to UNESCO, the 46 World Heritage-listed Fujian Tuolu Districts were built between the 15th and 20th centuries, although the architectural tradition itself extends even further. Some of these massive buildings were capable of accommodating up to 800 residents, and effectively functioned as independent villages surrounded by a single set of walls.UNESCO aptly describes it as a “little family kingdom” and a “bustling little city,” an unusually vivid description for the Heritage List, but one that captures its size perfectly.The circular design was merely decorative. In an era when rural communities faced attacks from bandits or rival groups, the Tulu offered protection without sacrificing daily life. Thick earthen walls, a single heavily fortified entrance, and few openings at ground level created a formidable defensive barrier.
Inside, families were able to continue their routines with surprising normality while remaining protected from danger outside.Their location was equally intentional. According to National Geographic, many tulus are laid out according to traditional Feng Shui principles, balancing mountains, rivers and farmland to create settlements believed to be in harmony with the landscape. UNESCO recognizes them as an outstanding example of architecture that responds not only to human needs, but also to its environment.
How hundreds of people lived together under one roof for centuries
Fujian Tuolou was not meant to be an ordinary house. It is designed as an entire community.Step through the heavy wooden entrance and the atmosphere changes immediately. Instead of narrow corridors or isolated rooms, visitors find a spacious central courtyard surrounded by several floors of wooden arcades. The space feels open, almost village-like, although it is surrounded by towering earthen walls.Life followed a carefully regulated rhythm. Kitchens and storage rooms usually occupied the ground floor, while the upper floors were reserved for bedrooms.
The central courtyard became the social heart of the building, hosting family gatherings, celebrations, meetings and daily conversations. Many Tolo also have ancestral halls, communal wells and co-working spaces, allowing residents to meet almost all of their daily needs without leaving the complex.Each branch of the extended family typically occupies a vertical slice of the building, with rooms stacked directly on top of each other.
It was an elegant solution that ensured fairness while maintaining family unity. Everyone had their own space, but no one lived in isolation.UNESCO notes that the Tulu region embodies centuries of “collective living and defensive organization,” and this description remains strikingly relevant today. At a time when loneliness has become a growing social concern in many parts of the world, these centuries-old buildings offer a fascinating reminder that architecture can shape the way people interact with each other.Their construction was equally ingenious. Built primarily from locally sourced rammed earth, timber, bamboo and stone, the exceptionally thick walls served as natural insulation, keeping the interiors cool during Fujian’s humid summers and retaining warmth during the cooler months. The builders achieved comfortable living conditions using little more than natural materials and practical experience accumulated over generations.
Why does Fujian Tuolou remain one of China’s greatest architectural wonders?
The enduring appeal of Fujian Tulou lies not only in its unusual appearance, but in the remarkable balance it strikes between engineering, sustainability and human relations.In 2008, UNESCO designated Fujian Tuluo as a World Heritage Site, recognizing it as an exceptional example of mass housing, defensive architecture and harmonious settlement planning.Perhaps most impressive is their longevity. Many tulus are built of compacted soil rather than concrete or steel, and have withstood centuries of earthquakes, heavy rains and changing weather conditions.
Its flexibility continues to attract architects, engineers and conservation professionals interested in traditional methods of sustainable construction.This interest has grown as modern architecture increasingly looks for environmentally responsible solutions. Tolo demonstrates that durable, climate-responsive buildings can be created using local materials, thoughtful planning, and an understanding of place rather than technological sophistication alone.Many of these exceptional buildings are still inhabited today, while others have become cultural landmarks welcoming visitors from all over the world. Walking through a landmark is less like wandering through a historical monument and more like entering a living neighborhood where architecture, family life, and history have been intertwined for centuries.Ultimately, Fujian Tulu challenged the modern assumption that larger societies required greater separation. The builders of these homes imagined something different: a place where hundreds of people could live together, support each other, and at the same time feel at home. Centuries later, those giant circular walls still tell this story remarkably well.