What humanoid machine did Leonardo da Vinci design around 1495 for entertainment and display?

Leonardo da Vinci designed a mechanical knight around 1495 for entertainment and display.

The machine was built as a suit of armor containing a system of pulleys, cables, gears, and levers. Leonardo’s sketches suggest that the figure could sit, stand, raise its arms, and move its visor. The design was likely connected with court festivities organized for Ludovico Sforza in Milan.

The original machine has not survived, and no complete contemporary description confirms exactly how it operated. Modern researchers reconstructed the mechanism from Leonardo’s anatomical and mechanical drawings. In 2002, robotics engineer Mark Rosheim built a working replica based on the surviving evidence.

It is often called Leonardo’s robot, but “mechanical knight” is the more historically descriptive name. It was not an autonomous robot in the modern electronic sense. Its movements depended on mechanical controls and stored or transmitted motion. The project demonstrates Leonardo’s interest in linking human anatomy with machine mechanics.