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The Cullinan
天璽


General information
Location	Union Square, Kowloon, Hong Kong
Coordinates	22°18′19.4″N 114°09′38.8″E / 22.305389°N 114.160778°E / 22.305389; 114.160778
Construction started	2007; 17 years ago (2007)
Completed	2008/2009
Height
Antenna spire	270 m (885.8 ft)
Technical details
Floor count	68
Design and construction
Architect(s)	Wong & Ouyang
Developer	Sun Hung Kai Properties
Main contractor	Sanfield Building Contractors

The Cullinan

天璽

Transcriptions
Yue: Cantonese
Yale Romanization	Tīn sáai
Jyutping	Tin1 saai2

The Cullinan is a luxury private housing estate located in the Union Square, West Kowloon, Hong Kong.

The building has glass curtain walls and views of Victoria Harbour. The glass facade matches the design language of the neighbouring International Commerce Centre.

This complex was named after the 3,106 carat (621.2 g) Cullinan Diamond found in 1905; the largest gem-quality rough diamond ever found, whose constituent cut diamonds are found in the British Crown Jewels and Elizabeth II's jewels.

During development under Sun Hung Kai Properties, the complex went by Kowloon Station Development Package 6 and Union Square Phase 6. Both towers of The Cullinan complex, called The Cullinan North Tower and The Cullinan South Tower, are Hong Kong's tallest residential towers at 68 storeys and 270 metres (886 feet). They were completed in 2008 and 2009 respectively.

Original proposal

The Cullinan complex was proposed at only 45 storeys up until the cancellation of Union Square Phase 5. After Phase 5 was dropped, the Cullinan Towers were proposed at the current 93 floors instead.^[1] The penthouse apartment units are located on the top floors of the building. According to Time magazine, it "could well qualify as the world's most expensive apartments."^[2]