The Book of Secrets is a manuscript dating back to the year 1000. It is a priceless manuscript, as it includes descriptions and drawings of more than thirty ingenious devices including mechanical apparatuses, water clocks, automatic calendars and war machines.

All the work that has been presented in a permanent exhibition at the Museum of Islamic Art in Doha, and it was one of its main attractions on the occasion of its inauguration on November 22, 2008. The exhibition presents a digital and interactive reconstruction of the manuscript, explaining all its machines to the public, thanks to tridimensional models animated through a holographic touch screen.

Two machines of the Book of Secrets were physically reconstructed: The Fortress Demolisher (Figure 23, f. 35v) and the Clock with Three Characters (Figure 11, f. 21r).