Fiona Bruce and the experts visit an active air base at Marham in Norfolk.

The final episode of the series showcases five artists who, through uniquely different styles of work, address and respond to contradiction, conflict and ambiguity and examine the relationship between mystery and meaning in art. Collaborators Jennifer Allora and Guillermo Calzadilla draw inspiration from their belief that art can function as a catalyst for social change, and their works - which include sculpture, video documentation and public installations...

Fiona Bruce and the experts pay a second visit to East Sussex as they welcome thousands of visitors to Eastbourne Bandstand.

Folk artists seem naturally to use their homes and yards as a canvas for art. 'Dick and Jane's Spot' in Ellensburg, Washington is a delightful world filled with this couple's unique folk art. In the backwoods near Seale, Alabama, Butch Anthony treats us to his folk artist hideaway complete with decorated hearse and bottle trees.

In the Big House in Edinburgh, web developer Iain and his wife Frankie, who works in marketing, have £190k to renovate their beautiful Victorian villa. In the Little House in Matlock, retirees John and Vanessa have £40k to turn their dilapidated barn into a picture postcard holiday home.

Fiona Bruce presents from inside the Farnborough wind tunnels.

In the Big House in Norwood, Brenda and Michael have £25k to tear down the walls and open up their boxy bungalow. They want to create a social space that stretches out into their garden. But with money tight it'll be a big ask. In Brixton, Paul who works in marketing has a small budget of just £500 to breathe new life into his garden. Having already finished renovating the inside of his flat he wants the outside to match.

Mary and Iain bought their dream home for its rural surroundings and woodsy feel, but their deck has a septic tank right in the middle.