AnonD-416078, 06 Apr 2016This is a "real" Arena
https://en.wikipedia.org/wiki/Allianz_ArenaMaybe in German. Not in English. Arena refer to smaller venues, but more importantly, they're indoors. Stadium refers to (larger) outdoor venues.
You won't find any outdoor venues called "arena" in English. At least I can't think of any outdoor venue referred to as an "arena" in the US, Canada or the UK.
If anyone has an example, please feel free to share.
That would make a great venue for ice hockey, with the view of the ice being pretty much unrestricted. I know there is no NHL team in Nevada at present, so this would pose a brilliant facility for potential expansion, which I know the NHL are looking in to.
Anonymous, 07 Apr 2016Nice venue for Pacquiao vs. Bradley fight. the fight will be on the MGM Grand Garden Arena
Anonymous, 06 Apr 2016Nice one t-mo.Great! T-Mobile is getting bigger!
AnonD-416078, 06 Apr 2016This is a "real" Arena https://en.wikipedia.org/wiki/Allianz_Arenazero care given
This is a "real" Arena