2/6 Iolo Williams visits the Dee Estuary, home to hundreds of thousands of birds.
Iolo Williams visits Skomer Island, an unspoilt offshore island and wildlife haven.
Iolo Williams visits the Penclacwydd wetlands reserve in Llanelli.
Iolo Williams explores the Scottish Highlands and compares it to the Welsh landscape.
Presenter Iolo Williams visits nature reserves on Anglesey and in Montgomeryshire.
Iolo Williams begins his tour of the richest habitats in the land on the Berwyn Mountains.