Season 3

Eddie Butler and Heledd Fychan find out if the Gwent Levels flood of 1607 was a tsunami. Disappearing rural cottages, and is the chain bridge at Llangollen is the oldest of its kind in the world.

Eddie learns to play handball at Nelson's unique handball court - the only one in the UK. Does the Norman town of Grosmont have the oldest church roof in Wales? How Bardsey Island changed through the ages. Updating traditional rural cottages.

The remarkable story of a 19th-century cursing well near Abergele, the secrets of a showcase mine (Ystrad Einion). Visiting Brynmawr Welfare Park to discover how it was built by volunteers from Europe. Pre-historic rock art on Anglesey as it's never been seen before,

A look at the decommissioning of the Trawsfynydd nuclear power station, the lost settlements of Skomer Island and the search for the wreck of a Bristol Channel pilot cutter.