I
imamartian
It's a difficult call - on the one hand you want to give them variety, but on the other flights and accommodation are expensive. And then there is of course the purpose of the visit - the trouble with the great "wonders" of the world is that they are so touristy, but yet are the most reasonably priced as a package deal. Plus of course, it may not exactly interest them (I now have a complete disdain for stately homes, having been dragged round so many when I was a sprog).
So, in answer to your question - I don't know
I know what your saying dex... even a safari these days seem to be 'staged'.... but i think Disney, Busch gardens, epcot, nasa etc are an essential... of and skiing?