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How does a double-helix staircase work?
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Chambord Castle in the Loire Valley, France, features ornate towers and spires, with manicured gardens and a moat in the foreground. Diagram showing the double helix staircase in the Chateau de Chambord, France, with a side view illustrating two intertwined spiral staircases around a central column and an aerial view highlighting their separation, allowing people to ascend and descend without crossing paths. The double-helix stone staircase at Chateau de Chambord in France, with two people ascending separate intertwining flights beneath a vaulted, ornate ceiling. Leonardo da Vinci Chateau de Chambord in France, a large Renaissance castle with ornate towers and chimneys, reflected in the still water of a moat or canal in front.
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Château de Chambord
The Château de Chambord and the surrounding moat, in Chambord, France.
© Mistervlad/stock.adobe.com
Illustration of the Château de Chambord double-helix staircase
Some historians believe the Château de Chambord double-helix staircase was designed...
Encyclopædia Britannica, Inc./Steven N. Kapusta
Double-helix staircase inside the Château de Chambord
View of the double-helix staircase inside the Château de Chambord in Chambord, France.
© Mastroraf/Dreamstime.com
Leonardo da Vinci
Self-portrait by Leonardo da Vinci, chalk drawing, 1512; in the Palazzo Reale, Turin,...
Alinari/Art Resource, New York
Château de Chambord
At the center of the Château de Chambord is the donjon, or keep, where a double-helix...
© Pecold/Shutterstock.com
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