The main octagonal centre hall extends the full height of the house and has a dome with caryatids around it and a skylight.

There is also a mirrored drawing room with a gilded and painted ceiling, and a vast ballroom similar to that of the family's London residence, Londonderry House.

This, 127 feet (39 m) high, commemorates the arranged visit of the 1st Duke of Wellington, the national hero who also served as Prime Minister, to the house and the area in 1827.

The grounds today include a 15-acre (61,000 m2) ornamental lake, a walled garden, two entrance lodges, three cottages, a former racing yard, and productive farmland.

The estate remained in the Londonderry family until 1987,[1] although it had been let as a training school for teachers from 1945 until 1960, during which time it lost most of its original contents through sales and breakages.

It is now a special event venue owned by the Hall family and, while much of the estate has been given over to residential and light-industrial development, the parkland around the house has been preserved.

[2] King Edward VII and Queen Alexandra (as Prince and Princess of Wales before 1901) were frequent visitors to Wynyard.