Every year millions of us flock to the homes and gardens of one of Britain’s most important cultural institutions – the National Trust. But out of sight of visitors lies a hidden world. Behind closed doors, dedicated teams of volunteers, experts and curators are battling to keep our priceless heritage alive.

This series meets the people who are saving the past for all of us, and brings to life the stories behind the historic houses and gardens. We’ll uncover the stories of the men and women who built these magnificent places, and discover the hidden histories of the objects within. And we’ll find out what it takes to conserve the works of art, precious furniture, and delicate fabric of the buildings themselves, for us all to enjoy.