China has some of the fastest growing cities in the world. Chongqing, in Southwest China, has 8.2 million people packed into the city centre, which is less than 500sq km in size.
So it’s difficult to make the room to lay train tracks – especially with high-rise buildings all around. So instead of going over, around or under, engineers came up with an idea: to put a railway line through a block of apartments.
While it seems totally crazy and you’d expect it to make life for residents of the 19-storey building unbearable, it’s anything but – the building is fitted with noise-reducing technology that means the train is supposed to make about the same amount of noise as a dishwasher.
In addition, those living in the building can actually catch the train from that point on the track, with those on the sixth floor able to jump on from practically just outside their front door.