Syon House is one of London's last great manor houses, built on the site of a former medieval abbey during the 16th century and featuring classical interiors designed by the renowned architect Robert Adam. The estate encompasses approximately 200 acres of parkland landscaped by Capability Brown in Brentford, located nine miles from central London. The mansion showcases an impressive collection of original art and furniture within grand state rooms including the Great Hall, Red Drawing Room, and Long Gallery. Visitors can tour the house and state rooms, explore the Great Conservatory, wander the gardens and arboretum, and enjoy dining options and spa facilities, operating seasonally from mid-March through October.