Which cities have hosted a Major League Baseball All-Star game?

Question

How many cities have hosted a Major League Baseball All-Star game, and which are those cities?

Answer 1

According to this Wikipedia page, 30 cities hosted a Major League Baseball All-Star game. 

Here is the list of cities that hosted a Major League Baseball All-Star game (1933-2023):

Cities in the USA

1. Anaheim, California
2. Arlington, Texas
3. Atlanta, Georgia
4. Baltimore, Maryland
5. Bloomington, Minnesota
6. Boston, Massachusetts
7. Brooklyn, New York
8. Chicago, Illinois
9. Cincinnati, Ohio
10. Cleveland, Ohio
11. Denver, Colorado
12. Detroit, Michigan
13. Houston, Texas
14. Kansas City, Missouri
15. Los Angeles, California
16. Miami, Florida
17. Milwaukee, Wisconsin
18. Minneapolis, Minnesota
19. New York, New York
20. Oakland, California
21. Philadelphia, Pennsylvania
22. Phoenix, Arizona
23. Pittsburgh, Pennsylvania
24. San Diego, California
25. San Francisco, California
26. Seattle, Washington
27. St. Louis, Missouri
28. Washington, D.C.

Cities in Canada

1. Montreal, Quebec (1982)
2. Toronto, Ontario (1991)