A 38-metre square sunken garden, known as the Great Plat, is flanked by terraces on all sides.
To the east and west are the Rill Terraces, each with a 43-metre rill that runs from a hemispherical dipping pool fed by a water spout to a rectangular water tank at the southern end of the garden.
A third terrace, the Grey Walk, borders the northern edge of the Plat, while a great 70-metre-long oak pergola runs the length of the Plat to the south, framing views of the countryside beyond.

Dipping pool at the top of a rill

The east face of the Orangery in 1974