A Japanese company has developed a new way of demolishing high-rise buildings in densely built-up areas.
Taisei Corporation is using a "shrinking" technique as an alternative to using wrecking balls or explosives.
The luxury Akasaka Grand Prince Hotel in Tokyo, which closed in March 2011, is being taken down floor-by-floor.
Hideki Ichihara of Taisei Corporation said: "In Japan, and many big cities like Hong Kong, Singapore, and in the US, there are many towers over a hundred metres that will need to come down. In this way we can do it safe and clean."