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Facades, falcons and the problem with pigeons
The Burj Khalifa in Dubai cost a reported US$1.5 billion to build and takes a crew of 36 window cleaners around 3 months to clean the exterior.
Featured article
The Burj Khalifa in Dubai cost a reported US$1.5 billion to build and takes a crew of 36 window cleaners around 3 months to clean the exterior.