HOW IT WAS BUILT
Inside Chan Chan's Adobe Walls and Ten Royal Citadels
Chan Chan wasn't one palace but ten walled citadels, each raised in adobe by a different Chimú king — how the world's largest earthen city was actually built.
See Chan Chan tours on Viator ↗The ten citadels of Chan Chan
| Citadel | Status today | Known for |
|---|---|---|
| Nik An (Tschudi) | Restored, open to visitors | Friezes, ceremonial plaza, walk-in well |
| Gran Chimú | Unrestored | The largest of the ten citadels |
| Rivero | Unrestored | Extensive water-management works |
| Chayhuac, Uhle, Tello, Squier, Laberinto, Bandelier, Velarde | Unrestored, closed to the public | Named mostly after the scholars and travellers who documented them |
A city built from the ground it stood on
Chan Chan was raised almost entirely from adobe — a mixture of mud, sand and plant fibre shaped and dried in the sun rather than fired in a kiln. Builders used both moulded adobe bricks and rammed, poured earth known as tapia for the thickest load-bearing walls, some of which are recorded as having once stood well over ten metres high. It was a practical choice on a desert coast with no accessible timber and no nearby stone quarries, and it let the Chimú build at a scale that nothing else on the Peruvian coast came close to matching.
Not one palace, but ten
Chan Chan's core is not a single royal residence but ten separate walled compounds, known as ciudadelas, each a self-contained citadel with its own audience courts, storerooms, workshops, a royal burial platform and a sunken garden well. Archaeologists today refer to them by the names of the scholars and travellers who first documented them rather than by any Chimú name that survives: Chayhuac, Uhle, Tello, Gran Chimú, Squier, Nik An — better known by its old name, Tschudi — Laberinto, Bandelier, Velarde and Rivero, laid out in roughly the order they were built.
One king, one compound
The leading theory among archaeologists is that each ciudadela was built for a single ruling Chimú king, who lived, governed and was eventually buried within its walls; on his death the compound became a shrine dedicated to him rather than passing intact to his successor, who built an entirely new one for himself. That pattern — known to specialists as split inheritance — would explain why Chan Chan kept expanding outward across two centuries instead of simply being reused or built upward, leaving a sequence of ten royal compounds standing side by side across the desert.
Nik An — the one you can visit
Of the ten citadels, only Nik An, long known by the surname of the 19th-century Swiss naturalist Johann Jakob von Tschudi who studied it, has been substantially restored and opened to visitors. Its layout — a grand ceremonial entrance plaza, a maze of corridors and store-rooms, smaller audience courts, and a walk-in reservoir cut down to the water table — gives by far the clearest sense of how a Chimú king's compound actually functioned day to day, from public ceremony at the plaza to the private life conducted deeper inside the walls.
Water in the desert
Each citadel held at least one huachaque, a garden or well dug down to the water table in a landscape that receives almost no rainfall in an ordinary year. These sunken reservoirs supplied drinking water and irrigated small plots inside the palace walls, and their design reflects a wider Chimú skill with water: elsewhere along this stretch of coast, the kingdom built some of the ancient world's most sophisticated irrigation canal networks, moving river water for many kilometres across the desert to sustain farmland far from any natural water source.