The impressive 100 metre long Edwardian pergola was designed by Harold Peto and needed extensive restoration after the 1987 storm and lead to a completely new planting scheme. Running east-west across the North Lawn it is now host to many varieties of magnolia, clematis, rose and honeysuckle.
Interior herbaceous borders are planted with a wide variety of hostas, pelargoniums, ferns, iris, dicentras and spring bulbs. The Gazebo at the west end of the pergola features a mosaic floor of knapped flints interspersed with horses' molars.
The amphitheatre to the north is used for theatrical open-air performances in the summer period.