Syon House is a historic mansion located in Brentford, London, England. It serves as the London home of the Duke of Northumberland and is known for its stunning architecture and beautiful gardens. The house was originally built in the 16th century and has undergone several renovations over the years, showcasing a mix of styles. The estate features a large park and is surrounded by the Syon Park, which is open to the public. Visitors can explore the house's impressive interiors, including the grand hall and various rooms filled with art and antiques, reflecting its rich history.