It will take a team of 36 window cleaners three months to wash the new 2,717-foot Burj Khalifa in Dubai.

The building, which was initially to be named the Burj Dubai, stands at 206 storeys tall, reaching half a mile into the sky. While most visitors will look out from the skycraper to admire the view of the Arabian desert below, some will be looking back in.

A team of 36 cleaners, mostly made up of migrant workers, have been employed to man 12 state-of-the-art machines that travel along tracks fixed to the exterior of the building while its windows are washed.

It is an unenviable task, but someone has to do it.

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