Pool in old stone barn, help please

[Ray bright]

Help please, I have a large old stone barn in france about 60x40 with stone walls, ceiling is 20ft high with part boarding part solid wood planks, with concrete beams and wooden joists.

I am thinking of putting my intex above ground pool in the barn so I can get more use out of it, can able tell me what damage I may do to the building and what would be the best way to deal with it.

Thanks

Ray