Sean Fletcher concludes his journey along the Wales-England border, and crosses the world's highest canal aqueduct. He also explores North Wales on horseback, and discovers the secrets of an iron age hillfort.

Sean Fletcher concludes his journey along the Wales-England border, and crosses the world's highest canal aqueduct. He also explores North Wales on horseback, and discovers the secrets of an iron age hillfort.

Sean Fletcher follows the Offa's Dyke Path along the Wales-England border, visiting more than 50 locations along the 177-mile National Trail.

Sean Fletcher follows the Offa's Dyke Path along the Wales-England border, visiting more than 50 locations along the 177-mile National Trail.

Sean Fletcher continues his journey along the Wales-England border, following the Offa's Dyke Path. He explores the treasures of Powis Castle, meets the farmer feeding his cows beer and takes a flight in a homemade bi-plane.

Sean Fletcher continues his journey along the Wales-England border, following the Offa's Dyke Path. He explores the treasures of Powis Castle, meets the farmer feeding his cows beer and takes a flight in a homemade bi-plane.

Sean Fletcher continues his journey along the Wales-England border, exploring Britain's longest ancient monument, searching for pine martens in the Shropshire Hills and meeting an artist creating giant mirrored eggs.

Sean Fletcher continues his journey along the Wales-England border, exploring Britain's longest ancient monument, searching for pine martens in the Shropshire Hills and meeting an artist creating giant mirrored eggs.

Sean Fletcher continues his trek along the Offa's Dyke Path, exploring the Black Mountains, the world-famous literary town of Hay-on-Wye, and the Mid-Wales mansion with links to Sherlock Holmes.

Sean Fletcher continues his trek along the Offa's Dyke Path, exploring the Black Mountains, the world-famous literary town of Hay-on-Wye, and the Mid-Wales mansion with links to Sherlock Holmes.

Sean Fletcher follows the Offa's Dyke Path along the Wales-England border. He goes wild swimming in the River Wye, explores the world-famous Rockfield music studios, and helps with the grape harvest at a Monmouthshire vineyard.

Sean Fletcher follows the Offa's Dyke Path along the Wales-England border. He goes wild swimming in the River Wye, explores the world-famous Rockfield music studios, and helps with the grape harvest at a Monmouthshire vineyard.