Put up with a SNAG in Rio attraction (10)

I believe the answer is:

copacabana

I'm a little stuck... Click here to teach me more about this clue!

'snag in rio attraction' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'put up with a' is the wordplay.
I cannot really understand how this works, but
'a' could be 'an' and 'an' is found in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for copacabana that I've seen before include "Area of Rio de Janeiro known for its beach" , "14 30's [BARRY MANILOW]'s" .)

I've seen this clue in the Sydney Morning Herald.

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