Book excerpt: The traveller gets exactly what he needs, and in a handy format. THE TIMES The author seems to have covered every road in the country, and has something of interest to say about virtually every site. COUNTRY LIFE Istanbul is the only city in the world that stands astride two continents, spreading across from Europe into Asia at the southern end of the Bosphorus, the incomparably beautiful strait linking the Black Sea with the Sea of Marmara in northwestern Turkey. This Companion Guide to Istanbul goes as far as the region around Marmara from the Bosphorus to the Dardanelles, which flows into the Aegean past the historic ruins of Troy on its Asian shore.Revised and updated for this new edition, the book is a guide to the Byzantine and Ottoman monuments and to the many other places of great historic interest around the Marmara, including Edirne, Bursa and Iznik, ancient Nicaea, as well as the renowned archaeological site of Homeric Troy. It is also an introduction to Turkey itself and to its people and their way of life, which they are more than willing to share with the traveller who takes the time to become acquainted with them. JOHN FREELY has lived and worked on America's east coast, in Britain, and around the Mediterranean, but is long-time Professor of Physics at the University of the Bosphorus, Istanbul, and has been resident for many years in Turkey. His understanding of the land and its people has made him a respected interpreter of Turkey ancient and modern.