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The Nou Camp, or Camp Nou. Home to Barcelona FC. It has a capacity of 98,722.
Legally 92 000 spectators
yes
Safeco Field
2000 to 3000 spectators
it can hold 3,000 spectators
If you mean the Colosseum in Rome, it could hold 70,000 spectators.
Yes there are many churches in Barcelona.
Barcelona has 10 districts
Just a guess, but it's probably soccer/football, as it is very popular worldwide, so it has many, many spectators!
The camp nou, the home stadium of FC Barcelona, is the largest stadium of europe,with the capacity of 112000 people.
Barcelona is 101.9 km²