http://news.bbc.co.uk/2/hi/world/europe/10440300.stm
Deep in the forests of central France, an unusual architectural experiment is half-way to completion, as a team of masons replicates in painstaking detail the construction of an entire medieval castle.

The ­Chateau de Guedelon was started in 1998, after local landowner Michel Guyot wondered whether it would be possible to build a castle from scratch, using only contemporary tools and materials.