Kenneth Clark reflects on the music of 18th-century composers such as Bach, Handel, Haydn, and Mozart and how some of its qualities are embodied in the Rococo architecture of the churches and palaces of Bavaria.

Michael Portillo experiences a terrifying `victory roll' in a World War II Spitfire, high above the most famous aerodrome of the Battle of Britain, Biggin Hill. The 80-year-old aircraft is one of a fleet intensively maintained by a dedicated team.

With the dawn chorus of bird song in the air, Yorkshire artist, Shanaz Gulzar, takes time out from the hustle and bustle of life to indulge in Wensleydale and its wonderful vistas.

Alan Bennett goes high up into the north transept of Westminster Abbey, wanders along a hidden passage that goes around the whole building, sits in on a meeting of the Dean and Chapter, and visits the tombs.

The Swansea museum store contains everything from a stuffed pigeon to a police car, but can Bendor and Jacky reveal a multi-million pound lost masterpiece that will not only become a jewel of Swansea museum's collection, but also rewrite art history?

BBC FOUR is the BBC channel for people who want more. More depth, more range, more to stimulate the mind.

BBC FOUR is the BBC channel for people who want more. More depth, more range, more to stimulate the mind.

BBC FOUR is the BBC channel for people who want more. More depth, more range, more to stimulate the mind.

BBC FOUR is the BBC channel for people who want more. More depth, more range, more to stimulate the mind.

BBC FOUR is the BBC channel for people who want more. More depth, more range, more to stimulate the mind.

BBC FOUR is the BBC channel for people who want more. More depth, more range, more to stimulate the mind.

Michael makes his way to the beautiful Sussex village of Ditchling, where a Roman Catholic community of artists made their home. In the seaside town of Bexhill-on-Sea, Michael hears of the work of the wartime air raid precautions wardens.

Shanaz Gulzar steps back in time while walking through the historic village of Heptonstall. Filming on her handheld 360-degree selfie-style camera, Shanaz rambles past Hell Hole, and along the canal in Hebden Bridge.

Audrey's hopes of regaining her position as Lady of the manor look like being dashed when Richard's business crisis forces him to sell up. A death in the family puts Audrey in the driving seat.

Tracy goes off with a new boyfriend, so Arthur decides to find new accommodations for Paul and Nigel as well.

Marine archeologist Dr Jon Henderson tells the story of the Norsemen in Scotland. Visiting fascinating archeological sites across Scotland and Norway, he reveals that their presence continues to shape the identity and culture of Scotland.

Exploring the power and influence of American evangelical Christians as they aim to fulfil the Armageddon prophecy, and following these American believers as they prepare for what they call the Holy War.

Three scientists go onto and into the Greenland ice sheet, further than anyone has travelled before, to find out how fast the ice is melting and gather the data that will help predict the future.

Sir Kenneth Clark reveals how the Dutch were the first to grasp the revolutionary change in thought that replaced divine authority with experience, observation, and experiment.

Kenneth Clark reflects on the music of 18th-century composers such as Bach, Handel, Haydn, and Mozart and how some of its qualities are embodied in the Rococo architecture of the churches and palaces of Bavaria.

Michael makes his way to the beautiful Sussex village of Ditchling, where a Roman Catholic community of artists made their home. In the seaside town of Bexhill-on-Sea, Michael hears of the work of the wartime air raid precautions wardens.

Shanaz Gulzar steps back in time while walking through the historic village of Heptonstall. Filming on her handheld 360-degree selfie-style camera, Shanaz rambles past Hell Hole, and along the canal in Hebden Bridge.

BBC FOUR is the BBC channel for people who want more. More depth, more range, more to stimulate the mind.

BBC FOUR is the BBC channel for people who want more. More depth, more range, more to stimulate the mind.

BBC FOUR is the BBC channel for people who want more. More depth, more range, more to stimulate the mind.

BBC FOUR is the BBC channel for people who want more. More depth, more range, more to stimulate the mind.

BBC FOUR is the BBC channel for people who want more. More depth, more range, more to stimulate the mind.

BBC FOUR is the BBC channel for people who want more. More depth, more range, more to stimulate the mind.

Coverage of Tottenham Hotspur v Chelsea in the Women's Super League.

Helen looks at volcanoes. With shocking eyewitness footage of eruptions, and new thermal imagery and ultra-high speed photography, we can now capture on camera the complex processes crucial to understanding how and why these forces of nature erupt.