French people are building a medieval castle from scratch. Not only that, they’re using only tools, methods, and materials that were available during the time period — 1229 and the years following.
Because they’re French. Also because it’s cool. And it is.
Not to be missed: under [the construction], diaporamas — a slide show of constructing an arched dome. The subtitles are in French, but you should be able to figure it out.