This is the updated third edition of an atlas first published in 1998. During the past six years, the transportation network of the metropolitan area of Tokyo has changed a good deal. In the case of the subway system, lines have been extended, and some rapid-transit lines have been added, so code numbers for each station are given in our atlas for foreign travelers to identify them easily. In addition, as a result of urban development in areas such as Roppongi, Shinagawa, and Shiodome, quite a few new company buildings, stores, and hotels have appeared. These developments are also covered in this updated edition: 21 area maps of Metropolitan Tokyo (42 pages) showing not only chome numbers but also block numbers (banchi). 18 detailed maps of Central Tokyo (30 pages) to guide the reader even to numbered subway station entrances. An additional 7 maps of central Yokohama and Kawasaki and access maps to 3 U.S. military bases (Yokosuka, Yokota and Zama). Comprehensive index: More than 3,600 entries of town and station names, as well as major organizations and buildings, provide the user with easy access to all destinations.