lThe largest engineering and building project ever carried out by humans is the Great Wall of China. It stretches about 1,500 miles (2,400 kilometers) from Bo Hai, a gulf off the Yellow Sea in the east, to a point deep in Gansu province in the west.
lViewed from afar, Tokyo until recently was a typical Japanese low-rise city. Fear of earthquakes restricted the height of buildings, but since the mid-1970s new methods of construction have encouraged the building of skyscrapers. Most visible are those in the western neighborhoods called Shinjuku and Ikebukuro, which now overshadow the once imposing Tokyo Tower that dominated the downtown area from the 1950s