The phrase "assortment of cities" is correct and usable in written English.
It can be used when referring to a variety or selection of different cities, often in the context of travel, demographics, or urban studies.
Example: "The travel brochure featured an assortment of cities, each with its own unique culture and attractions."
Alternatives: "variety of cities" or "collection of cities".
Detectives have also searched an assortment of city parks, vacant lots and garbage dumps.
Their "Twelfth Night," complete with Shaina Taub's irresistible, original pop score, assembled professional actors, as well as amateur performers, from an assortment of city neighborhoods to reinvigorate one's own romantic feelings for one of Shakespeare's great comedies.
Her 47th District encompasses the more diverse northern part of the county including the county seat Santa Ana, Anaheim (home of Disneyland), and an assortment of small cities and towns that used to be farmland and citrus orchards only a half-century ago.
In the late 1980's, the magazine 7 Days featured a column by the Answer Man, who each week attempted to answer a bewildering assortment of New York City-related questions.
An assortment of similar utopianesque cities have been built, like Biosphere, Arcosanti, and Eden Project.
But there will also be an assortment of events throughout the city, and the details can be found at AllStarGame.com.com
Mon-Fri 4pm-2am, Sat 6pm-to cloSun Sun, dependent on show This sweaty, Pabst Blue Ribbon-soaked room is the heart of hipsterdom along Denver's bustling South Broadway corridor, hosting touring indie acts on their way up (think Vampire Weekend and Fleet Foxes) and an eclectic assortment of the Mile High City's best bands.
At his two Los Angeles-based restaurants, Vasquez features some of the cities widest assortment of Mexican spirits.
Progressive waves of Byzantines, Lombards, Arabs, Normans, Angevins, Aragonese and other overlords helped mold the peninsula into an assortment of independent and highly individual city-states.
