Leonardo da Vinci is celebrated as a painter, sculptor, musician, architect, engineer and anatomist.  Most enduring to his legacy are his inventions and designs. Leonardo da Vinci: Machines in Motion presents 40 full-scale machines that were built after in-depth study of Leonardo da Vinci’s designs by a group of scientists and skilled craftsmen in Florence, Italy.  Its uniqueness lies in the fact that many of the mechanisms are life-sized and fully operational. Visitors may touch and set them in motion, combining a fascinating hands-on experience with an exploration of the principles he employed to create each machine. The machines are grouped into four sections based upon applications linked to the elements–air, water, land and fire–which held a strong fascination for Leonardo da Vinci. Exhibits include such visionary inventions as the helicopter and glider, the armored tank, the drive transmission, the printing press and the bicycle. Most of the materials used in the construction of these machines were available in Leonardo da Vinci’s era, and are the ones proposed by him in his codices, including wood, rope and glue. The materials were crafted by hand (using tools prescribed by the master himself), and then reinforced for the traveling exhibition.