Arsenal has had 2 stadiums,
Highbury Stadium and Emirates Stadium
1913
White hart lane
They moved because they wanted more seats to fit in the stadium.
The Emirates Stadium, home of Arsenal Football Club, is not the 2nd largest stadium in the world. There are many stadiums in the world much bigger than it and there are stadiums in England that are bigger than it.
4 Stadiums
As of 2021, there are 17 NFL stadiums that are outdoors.
Arsenal have a capacity for over 60,000, Manchester have over 70,000 Chelsea have over 58,000 seats.
it depends... football, a certain team, baseball, or all the stadiums in the world?
there are 20 stadiums with natural grass left
One
As of 2021, 19 out of the 32 NFL teams have outdoor stadiums.
There are 1000's including NFL Stadiums, smaller league stadiums, high school fields, etc. But there are 31 NFL Stadiums.