About 5 hours north of Toulouse, a group is "modelling" a 13th century castle using only original methods and materials:

http://www.greatbigstory.com/stories/ge...techniques

Recently opened to the public, it seems.

Not only recently: The site of Guedelon has been opened to the public since the beginning of this great adventure.

I hope they keep registers, just in case people 1000 years in future, with hi end machines for everything, clains it was built by aliens. Háa háaa háa...

There was a small pyramid built to demonstrate that was perfectly possible for humnas.  Despite all that, silly people keep giving money to charlatan Erich Von Däniken

Even Discovery Channel ended in prostitution for such such alien theories.

http://www.greatbigstory.com/stories/ge...techniques

Recently opened to the public, it seems.

(Not sure why I felt moved to post this here. The dedication, the attention to detail?)