U&Yesterday +1 Thursday

A chance to buy goods from the comfort of home

Exploring long narrow tunnels beneath Exeter that were built in medieval times to protect the city. Plus, a marble quarry under the pine forests of Vermont

Exploring a former gold mine turned scientific laboratory in South Dakota. Plus, limestone tunnels in London and a former water cistern in Denmark

How Europe's most advanced power station became a film set. Plus, the structures made by scientific pioneer Nikola Tesla in his quest to provide the US with free electricity

The stories behind closed roads, including a route once used by the French Resistance and areas made impassable by crumbling hills and sand dunes

Hiram Maxim developed the world's first fully automatic machine gun, but it weighed a whopping 136lbs - until British company Vickers adapted the design

Bomber Command is unable to hit its targets precisely and attacks German cities under cover of darkness, while the Blitz in Britain brings public demand for revenge strikes

Robbie Cumming sets out to explore the meandering waterways of inner city Birmingham including the Soho Loop and the Engine Arm Canal

The experts are at Edinburgh's National Gallery of Modern Art, where objects include an 18th-century ivory figure ploughed up in a local field and a manuscript by Robert Burns

Derek picks up a lovingly restored 1925 Calthorpe motorbike that he thinks is more of a work of art than anything ever produced by Picasso

Dave gets wind of a possible free lunch at the officers' mess when he heads off to collect a stylish Swedish Volvo P1800S from an RAF base in the Midlands

Adolf Hitler has his mind on making Germany into a great empire by expanding eastwards, but his invasion of Poland tips the world into a violent and bloody war

Churchill's plan to attack Germany through Italy. Although considered the simplest military solution, the Allies were to face formidable opposition

The experts are at Edinburgh's National Gallery of Modern Art, where objects include an 18th-century ivory figure ploughed up in a local field and a manuscript by Robert Burns

Robbie Cumming sets out to explore the meandering waterways of inner city Birmingham including the Soho Loop and the Engine Arm Canal

Derek's back in his old stomping ground of Luton, to meet an old schoolmate who is saying goodbye to his 1912 De Dion Bouton

Sheldon and Peter need to find a way of turning a mint imported Beetle Cabriolet into client James's dream

Derek picks up a lovingly restored 1925 Calthorpe motorbike that he thinks is more of a work of art than anything ever produced by Picasso

How Europe's most advanced power station became a film set. Plus, the structures made by scientific pioneer Nikola Tesla in his quest to provide the US with free electricity

Michael Portillo continues to explore Alaska, helping a homesteader fell a tree to clear land for a log cabin and meeting scientists studying the Northern Lights

Gary goes hell-for-leather organising an antiques fair. He buys some military tripods and a vintage truck grille and repurposes them as stunning pieces of furniture

Dr Tracy Borman, Chief Curator at Historic Royal Palaces, goes behind closed doors to reveal the private lives of six historical figures, beginning with Princess Margaret

A chance to buy goods from the comfort of home