Paul Martin travels to Northern Ireland and to Mount Stewart - a country house recently bequeathed to the nation, that is still in the process of revealing its heritage treasures.

Elsewhere, Clare Balding drops in on the restoration of one of the greatest ecclesiastical treasures in the world - the medieval Flemish stained glass of Lichfield Cathedral. Charlie Luxton is further north, on the shores of Lake Windermere, getting to grips with 19th century machinery and the lost industry that once littered the Lakes. And The Apprentice star Nick Hewer dons flying goggles and takes to the sky in celebration of Britain's first aerial photographic collection, and the two pioneers who started it. Show less