Augusta National is only open for about 3 months a year for it's members, and this is just after the masters. The course is obviously open for the Masters tournament in early to mid April. It is also open for a few weeks before that so the players can come and get a bit of practice in before they start playing the tournament.
Augusta National IS a golf course
Augusta National Golf Course, is a golf course in Augusta, Georgia. It is world famous, because that is where The Masters is played.
Augusta National Golf Club, sometimes referred to as Augusta or the National, is a golf club in Augusta, Georgia, United States.
Although there are currently no women members of Augusta National, women can play at the Augusta National Golf Course as a guest of a member.
I think the nicest golf course in the US is Augusta National.