MCG
to be exact18,910 seats are in Rogers Arena
There is no bullring that seats 48,000. The Plaza México, situated in Mexico City, is the world's largest bullring at 41,262 seats.
20,562 seats are in Quicken Loans Arena.
The O2 in London - With a capacity of up to 20,000 - 23,000 depending on the event. It is one of the largest indoor arenas in Europe alongside the MEN Arena in Manchester, the Lanxess Arena in Cologne and the Belgrade Arena in Belgrade.
Approximately 20,000 seats are in the Joe Louis arena
Camp Nou. It is the largest stadium in Europe, with over 90,000 seats
The arena seats up to 19,079 for basketball 18,118 for ice hockey and arena football, and around 20,000 for concerts or other sporting events. Two-thirds of the arena's seating, including 2,500 club seats, are in the lower bowl. There are also 160 luxury suites, including 15 event suites, on three levels between the lower and upper bowls
Orlando Magic-Amway Arena 17,283
The possessive noun arena's seats is the singularform.The plural form is arenas' seats.
They, like the title says, are at the baseline of the arena.
Approximately 20,000 seats are in the Joe Louis arena
The Capital FM Arena in Nottingham has a capacity of 10,000.