It's not actually a country, so therefore doesn't have a capital. For the most part Antarctica is governed (loosely) by South Georgia and the South Sandwich Islands.
I know, I just wanted to get in the geography lesson ps. the Brits invented sarcasm oh and the Sandwich Isles!
I thought it was common knowledge that Scotland is amazing. Little fact for you; we have more katiechops living here than any other country in the world.
Its all about being happy http://www.buzzfeed.com/ashleyperez/these-are-the-top-20-happiest-countries-in-the-world