2. Hoover Dam

From stormy seas to the land-locked Mojave Desert, Rob Bell discovers the amazing story of how the mighty Colorado river was tamed and the Hoover Dam built.

3. Panama Canal

Rob travels the Panama Canal to learn how the seemingly unconquerable isthmus was bent to the will of determined engineers, creating one of seven wonders of the new world.

4. Beachy Head Lighthouse

Rob heads to England's south coast where he explores a trio of lighthouses built to protect vessels. He also experiences gravity-defying Victorian innovation.

5. Muckle Flugga Lighthouse

Rob visits the Impossible Lighthouse at Muckle Flugga in the Shetland Islands.

6. Boston Light Lighthouse

Rob travels to New England, sailing in the slipstream of the pilgrims and landing in Boston Harbor to discover the allegedly 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.