As regards impact, accepting that it's probably sensible to aim to generate less C02 - which I do, for a lot of reasons - then if it's a choice between Wind Turbines and Nuclear Waste buried under the Lake District, I guess I'd go for Wind Turbines. (if there was some sort of archaelogical protocol in place as well I guess). Wind turbines could hopefully at least be dismantled one day, unlike nuclear waste.
Perhaps that isn't the choice, though.
As an interim at least, though, I am always inclined to err on the side of 'renewables' rather than anything else. (ie Nuclear which is touted as the 'clean' alternative). I do have a big problem with Nuclear power/weapons/waste the whole toxic circle that comes with that. I don't think wind turbines look that bad a few on a hill above a village in North Wales, for example, if that power's going to the village - and they stand for non-polluting power. I dunno. They do have an impact, undoubtedly, it's not ideal any way, really.
If in these cases it's more a question shifting the turbines to where they'd have less of a impact (on archaelogical evidence in the sea, out of sight alignments with the circle) then I totally support that.