The London home of the Duke of Northumberland, Syon House contains some of Robert Adam's finest interiors.
The Gardens contain a spectacular Great Conservatory in landscaped parkland.
Open Apr-Oct, House WThSu & BH 1100-1700, Gardens Daily 1030-1700.
A supervised indoor play area and outdoor adventure playground for children up to 12 years old. Café.
Tel. 020 8847 0946.
Open Daily 1000-1800.