Between 1853 and 1870, hundreds of streets and thousands of buildings were demolished in Paris. Much of the city's history was lost as the Medieval and Renaissance quarters crumbled. When Leonard Pitt discovered that the Parisian neighbourhood where he once lived was entirely rebuilt during this period, he set out on a mission to reconstruct this lost city. Through four walking tours, complete with maps and photographs, Pitt shares his fascinating discoveries. Readers can now revisit the places that have been lost and bear witness to the change.