Building favoured in architectural circles? (7)

I believe the answer is:

rotunda

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'building' is the definition.
(I know that Rotunda is a type of building)

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for rotunda that I've seen before include "Italian Pantheon, for instance" , "circular construction" , "Do a turn (anag) -- circular domed building" , "Round building or hall" , "Circular room or building" .)

I've seen this clue in The Globe and Mail.

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