tokyo, the capital of japan, is one of the largest cities in the world. it is one of the world's most modern cities. twice in the 20th century, the city was destroyed and rebuilt.

　　in 1923 a major earthquake struck the city. thousands of people were killed and millions were left homeless as buildings collapsed and fires broke out throughout tokyo. it took seven years to rebuild the city.during world war 11 , tokyo was destroyed once again.as a result of these disasters there was nothing of old tokyo remaining in the downtown area.

　　after the war, the people of tokyo began to rebuild their city. buildings went up at a fantastic rate between 1945 and 1960, the city's population more than doubled. because of the olympic games held in tokyo in 1964, many new stadiums,parks and hotels were built to accomodate visitors from all over the world. as a result of this rapid development, however, many problems have arisen. housing shortage, pollution,waste disposal have presented serious challenges to the city,but the government has begun several programs to answer them.