More recently, Box Hill has experienced a construction boom, and is now home to high-rise buildings that are unusually tall for one of Melbourne's middle suburbs. These include the Australian Taxation Office's Box Hill Tower, the Whitehorse Towers and the 36-storey Sky One, which, at 122 metres, is the tallest building in Melbourne beyond the CBD. More high-rises are under construction, including New Chinatown, a $450 million twin tower project which will serve as a modern sibling of the historic Chinatown in the CBD. The continued transformation of Box Hill's skyline has seen it be dubbed as Melbourne's second city.