According to the Gale Guide to Cities of the United States:
"Hartford, Connecticut's state capital and second largest city, is known as "the insurance capital of the world."
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The world's chocolate capital is Belgium
Rayne, Louisiana, is known as the frog capital of the world.
Kansas City
Greenville is known as the towboat capital of the world.
The city of Hartford is the capital of the state of Connecticut and is considered to be the Insurance capital of the World.
Hershey in Pennsylvania is known as choclate capital of world
Detroit
Lisbon
Nuremberg.
Caracas, Venezuela
it is the Fall brook
Detroit, Michigan.