Eire 90
Image by ryaner

Iv'e been to the tallest stones in England, Wales, Scotland and the Republic of Ireland but not Northern Ireland which one is it ?
Also which is the tallest standing stone in the World ?

Hmmm Norn Iron's tallest stone.... They dont get very tall as far as I know (which isn't a whole lot!), maybe this one is a contender: http://www.themodernantiquarian.com/post/3791

I think the egyptian obelisks must be the tallest in the world, which one I've no idea though!

The tallest in the British Isles used to be in County Mayo - can't remember the townland name, but it was over 15m tall.