I was wondering if it might be more appropriate if the 'Museum' had been pitched as what it actually is, ie: a collection of folkloric and fantasy artifacts? Or even an art piece inspired by British Folklore old and new.

The term 'Museum' does seem to be rather misapplied, as it implies a serious degree of academic clout and rigor, which the caravan - entertaining and engaging as it is (or so I feel) - seemingly lacks.

People surrender their critical faculties before the weight of terms like Museum or Archive. And I suspect this could indeed be confusing to the average punter.