The Union Square development above Kowloon Station consists of seven development packages, and incorporates some 6,000 residential units, 3 hotels providing a total of over 900 rooms, over 2 million square feet of office accommodation, and almost 1 million square feet of retail mall.

In 2001, Wong & Ouyang was appointed as lead architect by Sun Hung Kai Properties for the final three phases of the Union Square Development.

The project is highlighted by the 484m tall International Commerce Centre (ICC). Kohn Pederson Fox (KPF) was the Consultant Architect collaborating with Wong & Ouyang to design this landmark tower with 231,800s.m. of grade-A office space, crowned with the 300-room Ritz-Carlton Hotel.

At 118 storeys high, the ICC is as tall as Victoria Peak across the harbour, and has become the city’s new landmark and a hub for multinational headquarters.

The other components of the project include the 270-metre-tall Cullinan twin towers. Designed by Wong & Ouyang, the two towers comprise the W Hotel and the Harbourview Place Suite, 72,472s.m. of serviced apartments and 21,300s.m. of residential development.

The Cullinan and the ICC were conceived as a group of three towers that mark the most prominent face to the Union Square development. Clad in a double-glazed unitized curtain wall system, the Cullinan twin towers are characterized by a modern, clean-lined aesthetic, making these hotel / serviced apartment buildings stand out from its Union Square neighbours.