Impressive, a city in Georgia (7)

I believe the answer is:

augusta

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'city in georgia' is the definition.
'Augusta' can be an answer for 'city' (Augusta is an example). I'm not sure about the 'in georgia' bit.

'impressive a' is the wordplay.
'impressive' becomes 'august' (I've seen this before).
'august'+'a'='AUGUSTA'

Can you help me to learn more?

(Other definitions for augusta that I've seen before include "23 [LOVELACE] 's first name" , "Georgian city, noted for golf tournaments" , "American city" , "US state capital - girl's name" , "22 [MAINE] 's capital" .)

I've seen this clue in The Telegraph.

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