Sorrento (Chinese: 擎天半島; Cantonese Yale: Kìhngtīn Bundóu) is a residential complex occupying the northern edge of Union Square.[23] The complex was built by The Wharf Estate Development Ltd. and MTR Corporation. It contains five residential towers completed in 2003 and was designed by Wong & Ouyang (HK) Ltd.

The towers are named Sorrento 1 through Sorrento 6. As in many buildings in Hong Kong, tower 4 is omitted because, in cantonese, "4" is a homophone for "death". All five towers follow the same design but reducing in height consecutively with the tallest being Sorrento 1, and the shortest, Sorrento 6. Sorrento 1 is 256 metres (841 feet) tall with 75 floors. It is the 2nd tallest residential building in Hong Kong and the 5th in the world. There are a total of 2,126 units in Sorrento.[23] Between Sorrento 2 and Sorrento 3 is a gap, where a foot bridge connects the residential complex to Kowloon Station and Elements.