Watch The Secret Life of Lighthouses

For our final lighthouse of the series Rob travels across the Pond, sailing in the slipstream of the Pilgrims and landing in Boston Harbour to discover the cursed beacon; Boston Light. America's first lighthouse is a story of civil war and personal tragedy, incredible innovation, and pioneering technology and Rob discovers the hidden stories of a nation's light keeping unsung heroes.

Rob sets sail to the furthest point of Britain to meet the Impossible Lighthouse at Muckle Flugga in the Shetland Islands. Rob discovers the sheer power of the 250ft waves that batter the rock and threatened life and limb of the men building and manning the light

Rob heads to England's south coast, where he discovers a trio of lighthouses built to protect vessels on the M25 of the high seas. At Beachy Head he meets an 18th Century vicar on a mission to save more than the souls of seafarers, experiences gravity defying Victorian innovation and discovers the genius way 20th Century engineering rescued a lighthouse from plunging into the sea.