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Results found in several dictionaries: Collins, Collaborative Dictionary
cathedral city 
  n  (=city that has a cathedral) ville  f  épiscopale 
Wells is the smallest cathedral city in England.   

Collaborative Dictionary     English-French
city councillor n. le conseiller municipal Reverso General Dictionary 
city desk n. 1) le service des nouvelles locales, 2) le service financier Reverso General Dictionary 
city editor n. 1) le chef de service des nouvelles locales, 2) le rédacteur financier Reverso General Dictionary 
Colorado City n. Colorado City Reverso General Dictionary 
Kuwait City n. Kuwait City Reverso General Dictionary 
mexico city n. Mexico Reverso General Dictionary 
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'cathedral city' also found in translations in French-English dictionary
plan de centre ville historique pref. historical city center map Reverso General Dictionary 
cité n. 1) city (f), 2) estate (f) Reverso General Dictionary 
Koweït-City pref. Kuwait-City Reverso General Dictionary 
autoroute urbaine nm. inner-city highway Reverso General Dictionary 
cité interdite nm. Forbidden City Reverso General Dictionary 
plan du centre ville historique pref. historical city center map Reverso General Dictionary 

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