When Gerald, Cathy, and Jimmy discover a mysterious castle complete with an invisible princess and a magic ring, they think only happy adventures lie ahead--until the castle's supernatural forces call on all the bravery they can muster.
The history of man-made flight for children growing in reading confidence. From Da Vinci to the Wright Brothers, find out how people dreamed of taking to the sky in complex "flying machines", before inventions such as hot-air balloons, airships, helicopters and of course aeroplanes made it all possible.