The Pyramid lies on St Anne's Hill, in line with the centre of the house at Castle Howard.
Hawksmoor had already built a pyramid in nearby Pretty Wood, and in 1732 proposed one clad in copper or silver, which remained unbuilt.
[2] In 2015 it was restored, the work including rebuilding the apex, replacing vermiculated stone, and cleaning and repointing the facades.
The four surrounding piers each has a square base on a plinth, with a hollow column pierced by oval apertures, and surmounted by a stepped capital.
Inside the period is a beehive vault containing a large, flat bust of Lord William Howard.