There is no national rugby stadium. Nowadays, Argentina is using VELEZ SARSFIELD stadium for their international test matches.
AVIVA Stadium (formerly known as Lansdowne Road Stadium)
There isn't 'one'. Australia plays rugby test matches, in Sydney (ANZ Stadium), Brisbane (Suncorp Stadium), Perth (Subiaco Oval) and Melbourne (MCG)
Post Fiji Stadium
Acadia national park
Each New Zealand city has its own rugby stadium and the NZ Rugby Union doesn't have an official stadium of its own, but the premier New Zealand stadium is probably Eden Park in Auckland as Auckland has the largest population base and is where the World Cup final was held in 1987 and where the World Cup final will be held in 2011.
London Irish Rugby Club, Madejski Stadium
Recreation Ground AKA ' The Rec'
The Offcial Name is the Australian National Rugby Union Team, their nickname is the Wallabies.