Fishwick House, Heritage residence in Castlecrag, Australia.

Fishwick House is a two-storey residence with split-level floors and sandstone walls, distinguished by circular columns decorated with gold leaf. The house is built on multiple levels that adapt to the natural contours of its bushland site.

Thomas Wilson Fishwick commissioned the house in 1929 as one of the final major projects of Walter Burley Griffin before his departure to India. The building stands on a site that was part of Griffin's larger plan for the settlement.

The house shows Griffin's approach to connecting living spaces with nature through asymmetrical design and large windows. The rooms open toward the landscape and create a relationship between indoors and the surrounding bushland.

The house stands at 15 The Citadel in Castlecrag, a private residence on the New South Wales State Heritage Register since 15 December 2006. It remains occupied and is not open to the public, so view it only from the street. The Citadel is a short cul-de-sac; approach on foot to see the facade without disturbing residents.

The house features a sunken entry passage that creates a subtle separation between public and private space. This design choice is a rare example of Griffin's experimental approach to transitions between areas.