It is home to the largest medical center in the world.
Houston
In this city there is the only river in the world that flows backwards.
Chicago (Chicago River)
... is the birthplace of the Internet.
Los Angeles (As Los Angeles Times reports, on October 29, 1969, the Internet was born there)
More than 800 languages are spoken in ... , making it the most linguistically diverse city in the world.
New York City
...'s 9,200 acres of park space makes it one of the most expansive park systems in the country.
Philadelphia
... gets sunshine more often than any other major metropolitan area in the United States.
Phoenix