BBC Two: The Farmers' Country Showdown
Alpaca breeders Barbara and Paul from Cumbria and Jean and Stewart from Scotland show off their animals at Westmorland County Show.
Piers Taylor and Caroline Quentin explore unusual homes built underground. In Greece, they view a house hidden beneath the landscape that still boasts stunning sea views. In the Swiss Alps, they visit a house made so invisible it has to be accessed via a tunnel. Next it's over to New Zealand's South Island to a house built underground to soften its impact on the landscape as well as withstand the threat of earthquakes, before the pair inspect a Dutch house created by deep excavation, which features a huge, light-filled open-plan living space. Last in the series.