This book presents a fascinating portrait of one of the world's most famous structures from a unique perspective. William Lindesay spent three years travelling 35,000 km across China, reconstructing vintage photographs - the earliest dating from 1871 - by retaking new images from exactly the same viewpoints. The book presents 72 of the most revealing "then and now" comparisons, along with useful histories of the sites, literary impressions by famous visitors and contemporary accounts that explain the changes that have taken place.