Arrowhead/Kauffman
Soldier Field (was cool)
Lambeau (also cool)
Faurot Field
Wrigley Field
Fenway Park
Gillette
Arrowhead East (Edward Jones dome)
Oakland Coliseum (total ****ing shit hole)

Arrowhead
M&T Bank (Ravens, I think thats the name)
Old Yankee Stadium
New Yankee Stadium
Old Giant Stadium
New Giant Stadium
Ralph Wilson Stadium
Cleveland Browns Stadium
Old Busch Stadium
Shea Stadium
MSG
Continental Airlines Arena (currently Izod Center)
Prudential Center

My stats get padded from all the sports teams/arenas in the area.

New Comiskey
Wrigley more times than a Sox fan should
Soldier Field (The Bears beat the 49ers in Overtime '01, AWESOME GAME!!!!)
The Coliseum (for Baseball and Football)
ATT Park
Oracle Arena
Busch (Old and New)
Memorial Stadium when The Bears played here

I'm going to the Tampa game this year.

Not that many, I guess.

Football:
Arrowhead Stadium
Ralph Wilson Stadium
Mile High Stadium


Baseball:
SkyDome/Rogers Centre
Yankees Stadium (old)
Fenway Park
Camden Yards
Kauffman Stadium
Coors Field


Basketball:
Air Canada Centre
Madison Square Garden
Verizon Center


Hockey:
Maple Leaf Gardens
Air Canada Centre
Scotiabank Place
Continental Airlines Arena
Kemper Arena (KC Blades)

Too many to list here...stadiums I haven't been to would be shorter

Citrus Bowl
Raymond James
Sun Life Stadium

Football

Arrowhead (Chiefs)
Edwards Jones Dome (Rams)
Invesco (Broncos)
Astrodome (Oilers)
Vikings Stadium (whatever it is)

Baseball

Kauffman (Royals)
Mile High (Rockies)

Soccer

Livestrong Sporting Park (Sporting Kansas City)
Toyota Park (Chicago Fire)
Dicks Sporting Goods Park (Colorado Rapids)
Qwest Field (Seattle Sounders)
BBVA Compass Stadium (Houston Dynamo)

The Kingdome
Qwest Field
Key Arena (Thunder games)
The Coliseum (Before it was Key Arena
Arrowhead
Kemper Arena

Not many at all.

Bank of America Stadium...


Thats All

Professional:
Arrowhead
Kaufman
Kemper
Old Mile High
Old Yankee Stadium
Fenway
Camden Yards
PNC
Heinz
Citizens Bank Park
Rich Stadium
Hershey Park Arena (Where Wilt scored 100)
HSBC Arena
Livestrong

College:
Allen Fieldhouse
Kansas Memorial
Beaver Stadium
Bryce Jordan Center

Not that many;
Old KC Municipal
Kaufman
Wrigley Field
Washington Nationals Park
Washington FedEx
Arrowhead
Bill Snyder Family Stadium
Bramlege Coliseum

Not many:

Arrowhead
Kauffman
Kemper
Sprint Center
Old American Royal (KC Blues hockey)
KC Municipal
Livestrong
Dodgers Stadium
Three Rivers
Texas Stadium (what a dump)
Kingdome

KU Memorial
Allen Field House
Bill Snyder Family Stadium
Ahearn Arena
Bramlage

My small list;
Arrowhead
Kauffman
Kemper (Comets, Blades, WWE PPV)
Memorial Hall (free tickets from family fried Bulldog Bob Brown)

L.P. Field (Titans)
Bridgestone Arena (Nashville Preds)

Old Busch Stadium
New Busch Stadium
New Kauffman Stadium
Arrowhead Stadium
Nieland Stadium (Tennessee)
After next Saturday...Death Valley (LSU)
FedEx Arena (Memphis Grizzlies)
Hammons Student Center (Old Missouri State venue)
Hammons Field (if you count MLB AA affiliates)