photo credit: ~ Phil Moore
UKClimbing.com offers up a comprehensive guide to bouldering at Fontainebleau, France complete with how to train, the local rating system, when to go, and where to stay.
It has been used as a bouldering area since the 1870s and has almost continuously remained at the centre of the world bouldering scene since the 1930s. Possibly as it is quite unique for one area to exhibit so many desirable characteristics: a large number of classic problems at all grades – including classic moderates, largely excellent soft and sandy landings, a positive and active local scene, historical interest (possibly the first or at least very early ascents of the first 4, 5, 6 and 7s in the world,) a strange and surreally beautiful locale, much potential for development and finally, the subtle nature of the problems, requiring footwork, body position and general trickery, often making success as much a mental as a physical workout and as a result it is supremely satisfying.
Another excellent resource for bouldering in Fontainebleau is Bleau.info