I don't pick a city because it has produced lots of great boxers (like Detroit) but based on the number of boxing events in this city...

My choices in order:
Tokyo
Osaka
Las vegas
Atlantic city
New york
London
Berlin
Hamburg
Bangkok
Miami
Francfort
Bueno Aires
Philadelphia
Mexico-city
Sao Polo
Tijuana
Guadalajara
...
Which cities i have forgotten?
What is your rank?