A Virtual Reality Concept from the 15th Century

In 1420 Venetian engineer Giovanni Fontana created a proposal for the Castle of Shadows.

From BLDG Blog:

Philippe Codognet describes the 15th-century machine as “a room with walls made of folded translucent parchments lighted from behind, creating therefore an environment of moving images. Fontana also designed some kind of magic lantern to project on walls life-size images of devils or beasts.” Codognet goes on to suggest that the device is an early ancestor of today’s CAVE systems, or virtual reality rooms—an immersive, candlelit cinema of moving screens and flickering images.

Full sized image at BLDG Blog