Looks like one of the Leonardo da Vinci 'replica' designs built to show he could have flown.
Da Vinci Glider Successful - A flying machine designed by Leonardo Da Vinci 500 years ago flew successfully last month. The device, built with the support of the Museo Ideale in Vinci, Italy, was flown by world champion hang glider Angelo D'Arrigo. Plans for the glider were sketched out by Da Vinci in 1510, but only discovered by scholars in 1996. The device, though faithful to Da Vinci's designs, incorporates modern lightweight materials like aluminum tubing and dacron cloth, instead of the wood and canvas Da Vinci envisioned. Without the modern materials the machine would weigh 220 pounds and be too heavy to effectively fly. The modern version weighs only 50 pounds.
http://www.angelodarrigo.com/leonardo/?start_e