Lindesay, Darling Point, Gothic Revival mansion in Darling Point, Australia.

Lindesay is a free-standing rectangular villa of 1834–36 at 1a Carthona Avenue, Darling Point, built of masonry with a self-contained facade on each side. It is the earliest domestic Gothic Revival house in Sydney, designed from English pattern books but simpler than Regency models, mixing Scottish austerity with colonial disregard for convention. It now holds National Trust offices, function rooms and a house museum.

Built between 1834 and 1836 for Campbell Drummond Riddell, the colony's Treasurer, and his wife Caroline, Lindesay was the first major house on Darling Point. It was named after Colonel Patrick Lindesay, acting governor in 1831, who reserved the 6.9-hectare site for Riddell. Later owners included Surveyor-General Sir Thomas Mitchell and Sir Charles Nicholson, who kept his library and statues there.

The home displays English and colonial furniture collections that reflect how a wealthy family lived and entertained. The rooms are furnished with original pieces that show the domestic tastes and lifestyle of that era.

The property is open to visitors but requires planning ahead since tours run at set times with limited slots. It is located in a residential area where parking can be difficult, so arriving early or using public transport is recommended.

The downstairs includes preserved servant quarters with an original stone kitchen and a functioning historic freshwater well from the original era. These spaces reveal what daily work and life were like for domestic staff in the 1800s.