Longford Castle is a distinctive triangular Elizabethan prodigy house built in 1591 for Sir Thomas Gorges, courtier to Queen Elizabeth I, located in the Wiltshire countryside near Salisbury beside the River Avon. The castle's unique three-angle design with drum towers reflects Swedish architectural influences brought by the owner's wife, Helena Snakenborg, a former lady-in-waiting to the Queen. Now the ancestral seat of the Earls of Radnor, the castle houses a hugely important art collection featuring works by van Dyck, Claude, Reynolds, and Gainsborough, along with exceptional 18th-century English furniture and continental decorative arts. Seasonal guided tours through the National Gallery provide access to this remarkable blend of Renaissance design and artistic treasures.