The nickname for the Australian Open is ‘the Happy Slam’ because, I think, it has a cheerful, friendly, low-key sort of vibe, as compared to, say, Wimbledon, which has a reputation for being a little more formal or buttoned-up. Of course, with its grass courts and well-kept grounds, Wimbledon is probably the most beautiful of the four slams. The other two slams are the French Open and the U.S. Open.