The Essential Numbers
| Category | Figure |
|---|---|
| Construction began | September 1519 |
| Commissioned by | King François I of France |
| Architectural style | French Renaissance (Italian Renaissance influence) |
| Total rooms | 426 |
| Staircases | 77 |
| Fireplaces | 282 |
| Chimneys | 365 |
| Sculpted capitals | approx. 800 |
| Floors | 4 (plus rooftop terrace) |
| Estate area | 5,440 hectares |
| Enclosing wall length | 32 kilometres |
| Formal garden area | 6.5 hectares (parterre de broderie) |
| UNESCO status | World Heritage Site (Loire Valley, 2000) |
| Annual visitors | approximately 900,000 |
Construction Facts
| Detail | Information |
|---|---|
| Workers employed | Estimated 1,800 at peak construction |
| Construction period | Approximately 28 years under François I (1519–1547); continued under Henri II and completed under Louis XIV (1660s–1680s) |
| Primary building material | Tuffeau limestone (local Loire Valley stone, warm ivory-white when dry) |
| Architects | Unknown with certainty. Domenico da Cortona is documented as producing a wooden model. Leonardo da Vinci is widely credited with influencing the double-helix staircase design. |
| Original moat | Water-filled; the Cosson river was redirected to supply it. Dry today. |
| Original river diversion plan | Plans to divert the Loire itself were abandoned as unworkable. The smaller Cosson was redirected instead. |
| Days François I actually spent at Chambord | Estimated 72 days total during his 32-year reign |
Interesting Facts About Chambord
The Salamander Emblem
François I's personal emblem — a salamander in flames — appears carved hundreds of times throughout the château. The motto reads: Nutrisco et extinguo ("I nourish and extinguish"). The salamander was believed in medieval and Renaissance tradition to be impervious to fire, making it the perfect symbol for a king who saw himself as both protecting and mastering the forces around him.
The 365 Chimneys
The number 365 is almost certainly not a coincidence — one chimney for every day of the year was either planned or retrospectively observed and celebrated. Each chimney is unique in its decorative scheme, carved by different craftsmen. Standing on the rooftop terrace and looking in any direction, the chimneys compete with each other for height and elaboration.
Molière's World Premiere
On 14 October 1670, the playwright Molière premiered Le Bourgeois Gentilhomme in Chambord's courtyard, before an audience that included Louis XIV. The play, commissioned by the king to satirise a social-climbing merchant, was reportedly met with silence by the royal audience on its first night. Louis XIV disliked it. On the second night, he changed his mind and praised it lavishly. It became one of Molière's most celebrated works.
The Mona Lisa's Wartime Home
Chambord served as the primary repository for the Louvre's evacuated collections from September 1939 — housing the Mona Lisa, Delacroix's Liberty Guiding the People, Veronese's The Wedding at Cana, and thousands of other works during the early period of the Second World War. See the full wartime story.
The Longest Château Wall in Europe
The 32km enclosing wall — built in the 17th century to contain the royal hunting estate — is the longest continuous château wall in Europe. It stands approximately 3.5 metres high, with towers at regular intervals. It is still entirely intact.
François I Died Without Finishing It
Despite commissioning the most ambitious building project in French history, François I died in 1547 without seeing Chambord completed. Large sections remained unfinished at his death. The château was not furnished as a royal residence in his lifetime — he visited it primarily as a hunting lodge.
The Stag Rut
The Chambord estate contains France's largest population of free-ranging red deer. Every September, the château's forest fills with the sound of rutting stags — one of the most extraordinary wildlife spectacles in western Europe. See our wildlife guide.
Key Dates Quick Reference
| Year | Event |
|---|---|
| 1519 | Construction begins under François I |
| 1547 | François I dies; château unfinished |
| 1670 | Molière premieres Le Bourgeois Gentilhomme at Chambord |
| 1685 | Louis XIV's last major works at Chambord complete |
| 1725 | Stanisław Leszczyński (exiled King of Poland) takes up residence |
| 1748 | Maréchal de Saxe granted the estate by Louis XV |
| 1821 | Gifted to Henri, Duc de Bordeaux (Comte de Chambord) |
| 1930 | Purchased by the French state for 11 million francs |
| 1939 | Louvre evacuates artworks to Chambord (September) |
| 1981 | Loire Valley inscribed as UNESCO World Heritage Site |
| 2017 | Formal gardens fully restored and reopened |
| 2026 | Current ticket prices: €21 (EEA) / €31 (non-EEA) |
Book a Chambord Castle Tour
Facts are one thing; standing in the rooms where they happened is another. Every Chambord Castle tour and ticket gives you access to the château's 426 rooms, the double-helix staircase, the rooftop terrace with its 365 chimneys, and the formal gardens. Guided tours connect the numbers to the stories. Tours from $24 per person.