Chateau in the Making

"The Château de Guédelon is not a film set; it is not a restoration; it is not a hey-nonny-no-medieval theme-park. It is an exercise in archaeology in reverse: discovery by building up, not by digging down. By 2023, it will be a full-sized castle with battlements and a moat and six towers. "
The Independent has this story about the progress to date.

Treadmill winch - essentially a wheel and axle crane, also known as a squirrel cage.