Ladies, staying on, visit New Zealand tourist attraction (6,3)

I believe the answer is:

london zoo

'tourist attraction' is the definition.

'ladies staying on visit new zealand' is the wordplay.
'ladies' becomes 'loo' ('the ladies' is a type of loo or toilet).
'staying' is an insertion indicator (stay could historically mean to imprison).
'visit' becomes 'do' ('do' can mean to visit an attraction or landmark).
'new zealand' becomes 'nz'.
'on'+'do'+'nz'='ondonz'
'loo' going around 'ondonz' is 'LONDON ZOO'.

I've seen this clue in The Times.

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