Songdo is a big city. it's over six km and is on an artificial island in South Korea. But the streets of Songdo are very quiet and the air is clean because there are only one tor two cars. The roofs of houses and offices are beautiful because there are plants and gardens. So why isn't this modern city crowded with people?
Why isn't there a lot of traffic and air pollution?
At the moment only 22,000 people live in Songdo, nut about 65,000 people plan to live here in the future. That's because Songdo is a new and very intelligent city. It's only ten years old and has state-of-the-art technology. For example, the Internet is in everything in people's homes, their cars and in the roads.
At the centre of the city is a 'control centre'. It receives information from the internet abuot buildings, traffic and the weather. with this information, the control centre can change the city. for example, if there aren't people on a street at night, the control centre can switch the street, drivers receive information from the control centre.
Songdo is called a smart city and its architects think it is the city of the future.