Admiralty House, Historic residence in Kirribilli, Sydney, Australia.

This Victorian Regency and Italianate sandstone manor sits at the tip of Kirribilli Point, offering commanding views across Sydney Harbour toward the Harbour Bridge and Opera House.

Gibbes built the single-storey Wotonga between 1842 and 1843, quarrying stone locally and buying cedar joinery from George Coleson's timber-yard. In 1855 the house was requisitioned and its grounds turned into gun batteries against a feared Russian attack, then returned to private hands in 1856. The government bought it in 1885 for the Royal Navy's Australian Squadron commander, adding a second storey and a colonnaded verandah. In 1913 it passed to the governor-general.

The residence serves as the official Sydney home for the Governor-General of Australia and regularly hosts state dinners, diplomatic receptions, and ceremonies for distinguished international guests.

The house stands on the tip of Kirribilli Point, next to Kirribilli House, with a long covered walkway running from the main block down to a jetty at the water. It is a working vice-regal residence, so interiors are not open to visitors; the grounds and gardens are opened only on announced open days.

The 1808 portrait of John George Nathaniel Gibbes, who built the house, hangs inside; he used the Customs Department's cutter to commute to the construction site. The original single-storey Wotonga forms the core of today's building, and its east-west sight-lines now take in the high-rise CBD.