City Adam would have been very tempted to visit? (3,3,5)

I believe the answer is:

the big apple

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'city' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

(Other definitions for the big apple that I've seen before include "Nickname for New York" , "that could keep many doctors away?" , "first huge temptation?" , "Metropolis" , "New York City" .)

I've seen this clue in the Evening Standard.

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