South Georgia and the Antarctic Peninsula
I was told that you go to South Georgia for the animals and to Antarctica for the ice. It is pretty hard to argue that the animals on South Georgia aren't a compelling reason to go there but the reality is that both places are amazing for their animals and for their scenery.
The King Penguins on South Georgia are amazing, both individually and in their massive colonies. It is hard to compehend how the parents find their chicks in all that noise and chaos. The Elephant Seal "weaners" are curious about anything and everything. Stand still long enough and you will be the centre of their attention, sit down and they will be all over you!
Gentoo penguins nest bulding on Danco Island