The Union Square is a mixed-use commercial and residential real estate project in Hong Kong, located on the West Kowloon reclamation in Tsim Sha Tsui, Kowloon. The area covers 13.54 hectares, while the site has a gross floor area of 1,090,026 square metres, approximately the size of the Canary Wharf development in London. The complex contained som…The Union Square is a mixed-use commercial and residential real estate project in Hong Kong, located on the West Kowloon reclamation in Tsim Sha Tsui, Kowloon. The area covers 13.54 hectares, while the site has a gross floor area of 1,090,026 square metres, approximately the size of the Canary Wharf development in London. The complex contained some of the tallest buildings in Hong Kong, which includes the tallest commercial building in Hong Kong, the 118-storey International Commerce Centre and the loftiest residential tower in Hong Kong, The Cullinan, which rises 270-metre high.