Crossword Genius

Cultural centre? (6)

Ross

I believe the answer is:

garden

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'cultural centre?' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

This is the entire clue.

Can you help me to learn more?

(Other definitions for garden that I've seen before include "Where, eg, flowers are grown" , "Plant growing area" , "Ornamental grounds" , "fertile region" , "Danger in Eden?" .)

I've seen this clue in The Globe and Mail, The Irish Independent and The Guardian.
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