Huw Edwards narrates a look at Stonehenge's link to the Preseli Hills, Swansea's medieval beginnings and bomb-damaged streets, plus the secrets of the highest house (Gwylfa Hiraethog) in Wales.

A look at how laser scanning helped uncover the history of Vivian quarry in North Wales, the rediscovery of a medieval fish trap in Fishguard harbour and a visit to architect Herbert North's contribution to Llanfairfechan.

Discovering what may be a Roman villa near Trawsgoed in Mid Wales, uncovering the hidden secrets of a Renaissance ceiling at St David's Cathedral, and observing the preservation of a major sculpture at College Harlech.

A look at the house that time forgot near Raglan, and a visit to the World War I training trenches at Penally in Pembrokeshire. A look at the 18th century's largest copper mine (Parys Mountain).

A look at the legacy of a Tudor lord who wanted to turn Denbigh into the capital of North Wales. Pembrokeshire's Iron Age Forts. Strata Florida sheep farm.