The phrase "cities whose" is correct and usable in written English.
You can use it when referring to multiple cities with something in common. For example: "Cities whose monuments tell the story of their past."
And in cities whose economic fortunes have declined, museums suffer too.
So I'm happy for the cities whose global brands are strong.
The church's closing reflects an age-old tension in cities whose populations are shifting.
London is not Amsterdam nor Vienna, cities whose inherited profile is retained at all costs.
"Arusha and Dar are also packed," he followed up, referring to two Tanzanian cities whose warehouses were full.
As a practical matter, though, Jews in antiquity lived within walled cities whose protective barriers doubled for religious purposes.
Altogether, they looked at 726 individuals over 3,151 consumption days, including fans from cities whose teams won and lost.
Abroad, cities whose programs remain larger than New York's seemed particularly perplexed by the attention paid to the newcomer.
Private transit lines went bankrupt and were taken over by the cities whose livelihoods had come to depend on them.
Brett and other executives discussed design ideas and scouted locations in mid-tier U.S. cities whose hotel markets seemed underdeveloped.
The model is Italo Calvino's Invisible Cities, whose fantastic urban topographies are both always and never Venice itself.
