Castle Bay is a small bay just to the north of Yeomans Bay on Cowan Creek, which flows into the Hawkesbury River, New South Wales.
On the northern side of the entrance to Yeomans Bay which is an arm of Cowan Creek, usually known as Castle Lagoon. High on the southern entrance to the bay is a rock formation rather like a row of battlements; the name may be associated with this.
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Have you ever wondered when your house was built or who has owned your property over the years?