Rod Laver Arena is a multipurpose arena located within Melbourne Park, in Melbourne, Victoria, Australia. The arena is the main venue for the Australian Open, the first Grand Slam tennis tournament of the calendar year.
Rod Laver Arena has a seating capacity of 14,820, with a capacity of 15,400 for sports such as basketball, when extra seats are added around the court, and up to 16,200 for concerts with floor seating. The arena currently attracts over 1.5 million visitors per year.
The arena was the first in Australia to have a retractable roof installed, and it is the largest indoor arena in Australia without a permanent roof (not counting the 56,347 seat Docklands Stadium, also in Melbourne, which is classed as a stadium rather than an arena).
It is also the second largest indoor arena in Australia behind the 21,032 capacity Sydney Super Dome. The arena's retractable roof allows competitors to continue play during rain or extreme heat.
According to en.wikipedia