The Long Gallery contains Italian Old Masters, with a notable marquetry commode and matching pair of candlestands by John Cobb (1772) and four pier glasses designed by Robert Adam (1770).

[6] His 1761 plan for laying out the park separated it from the pleasure grounds using a ha-ha (sunken fence) so that the view from the house would not be obstructed.

Nash further embellished other areas of Brown's external building works, including Brown's Gothic Bath House in the North Avenue, as well as reorganising the internal layout to form a grand hall and a library, at the centre of which is the large library table associated with a payment to Thomas Chippendale's partner Haig, in 1779.

[9] By 1808 much of Nash's work was replaced with a more solid structure, when it was discovered that he had used unseasoned timber in beams and joists; all of Nash's work at Corsham save the library was destroyed when it was remodelled by Thomas Bellamy (1798–1876) in 1844–49[4][10] during the ownership by Paul Methuen, 1st Baron Methuen, who was Member of Parliament for Wiltshire and Wiltshire North.

This lake, however, was not completed until some forty years later, by Repton, who formed his long working relationship with Nash at Corsham Court.

They laid out avenues and planted the specimen trees, including American oaks, Quercus coccinea and Q phellos, and the magnificent oriental plane.

[15] During its stay at Corsham until 1986,[14] teachers at Bath Academy included many key figures of British art such as Kenneth Armitage, Terry Frost, Peter Lanyon, Adrian Heath, Bernard Meadows, William Scott and Howard Hodgkin.