An Illustrated Guide to the Lost Symbol is a companion to The Lost Symbol, Dan"s Brown"s follow-up to a publishing phenomenon, The Da Vinci Code. Featuring over 70 colour photos and illustrations, the book will explore the Freemasons and their role in founding the United States and building Washington, DC. The book will include a detailed walking tour of the capitol that will allow the reader to visit places where important scenes in The Lost Symbol take place.