Changi airport began operating in 1955. It is the 3rd airport built by the Singaporean Government, after Kallang airport and Seletar airport. Located in Changi, 20 km from Singapore city, at first it only had a single runway and a medium-sized terminal. But they had problem when the number of passengers increased from 300,000 to 1,700,000 in 1975, and escalated when passengers increased to a numerous 4 million people in 1975! The airport was unable to accommodate this amount of passengers.
To overcome the problem, the Singaporean government had 2 choices: renovate the existing airport or build a better airport somewhere else. They decided to renovate the airport after considering that it was not located so far away from a potential area. The unique thing is that the location of the new terminal used to be a bay.
First they built the runway, terminal, 80-meter tall tower, and other supporting facilities. Terminal 1 was finally finished and began operating on the 1st of July 1981. Terminal 2 was finished in 1986 and started operating on the 22nd of November 1990. And now, the airport has become one of Singapore's national pride!