Hong Kong has many historical monuments which need proper preservation. According to the Antiquities and Monuments Ordinance, the Antiquities Authority may, after consulting the Antiquities Advisory Board and with the approval of the Chief Executive as well as the publication of the notice in government gazette, legally declare a place to be protected.

Currently, there are a total of 99 declared monuments in Hong Kong and 4 of them are on HKU campus, which are the Main Building, Hung Hing Ying Building, Tang Chi Ngong Building and The University Hall.