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Tokyo，the capital of Japan，is one of the largest cities in the world．It is also one of the world’s most modern cities．Twice the last century，the city was destroyed and rebuilt．In 1 823 a big earthquake hit the city．Thousands of people were killed and millions were left homeless as buildings fell down and fires broke out．It took seven years to rebuild the city．During World War I I，Tokyo was destroyed once again．As a result of these disasters there is nothing of old Tokyo remaining in the downtown area．After the war，the people of Tokyo began to rebuild their city．
Buildings went up quickly，and between 1845 and 1910，the city’s population was more than double．Because of the Olympic Games held in Tokyo in 1 859，many new stadiums，parks and hotels were bunt to accommodate visitors from all over the world．As a result of this quick development，however，many problems have appeared．Housing shortage，pollution，and waste disposal have become serious
challenges to the city，but the government has begun several programs to answer them．