The book examines the evolution of lighthouse design, highlighting how these structures transitioned from simple bonfires to sophisticated towers with advanced optical systems.
The book emphasizes the interplay between engineering innovation, environmental adaptation, and societal need.
For example, constructing lighthouses on treacherous sandbanks required innovative foundation techniques, while building on rocky coasts demanded precise quarrying and fitting of granite.
Through case studies of iconic lighthouses, the book illustrates the practical application of engineering principles and the heroic efforts of construction crews.
Beginning with fundamental design principles, the book progresses through the evolution of light sources and the challenges of diverse environments.
It culminates by examining the automation of lighthouses and their ultimate decline with modern navigation systems, reflecting on their lasting legacy as symbols of human ingenuity and maritime safety.