Chicago
1) There is the longest river in the world in Chicago.
2) There are 522 parks in Chicago.
3) Walt Disney was born in Chicago
San Francisco
1) There is Russian Hill in San Francisco
2) The first bubonic plague epidemic broke out in San Francisco
3) San Francisco was part of Mexico until the Mexican-American War.
Los Angeles
1) Los Angeles is home to people from more than 140 countries speaking 224 different languages.
2) Los Angeles has the largest system of roadways in the country.
3) There is the most famous disctrict of the United States in Los Angeles. It's Hollywood.