This is surely one of the best known roses on the planet. Perhaps only surpassed by "Peace"? It's certainly one of my favorite white roses - I have seen some spectacular specimens of over 30' grown up the sides of houses, and they really are breathtaking.
We have a large climbingIceberg in our back garden. It's the one in the picture, and as I write this, I can see it from my office window. During October (spring in the southern hemisphere)it was an absolute mass of perfectly formed white flowers. The scent is not strong with Iceberg, although it does have a light fruity fragrance.
There are numerous sports from the original Iceberg... but for me, none of them surpass the white climber.