George Clarke's: National Trust Unlocked Series 1 George Clarke explores some of the UK's most impressive historic homes, as he delves into their hidden recesses and takes in their stunning surroundings.

Kingston Lacy
George is in Dorset at the UK's most exquisite example of Italianate architecture - Kingston Lacy. He also uncovers a tale of shame and scandal at the Cotswold landmark, Hidcote Manor Garden.

Dunster Castle
George visits 1000-year-old Dunster Castle in Somerset and discovers it's not size that matters at the finest surviving 17th-century water gardens, Westbury Court in Gloucestershire.

Cragside
George visits one of the most modern Victorian houses in existence - the water-powered, cliff-top mansion, Cragside in Northumberland, and explores the Grade I listed Cliveden Gardens.

Standen
George visits the magnificent and meticulously-crafted country retreat - Standen in West Sussex, and discovers a masterpiece of Gothic Revival architecture at Tyntesfield in Somerset.

Killerton
George discovers one of the National Trust's quirkiest buildings - a bear hut on the 6400-acre Killerton estate in Devon, and unearths secrets at Baddesley Clinton Hall, Warwickshire.

Ham House
George explores one of Britain's grandest 17th-century powerhouses - the decadent Ham House, and gets a private tour at the modernist Hampstead home of architect Ernö Goldfinger