The ground water of Lilau used to be the main source of natural spring water in Macao. The Portuguese popular phrase: “One who drinks from Lilau never forgets Macao” expresses the locals’ nostalgic attachment to Lilau Square. This area corresponds to one of the first Portuguese residential quarters in Macao with a typically Mediterranean atmosphere containing some later Art Deco influences that contrast with the nearby traditional Chinese architecture of the Mandarin’s House residential complex, in a clear example of a fusion of western and Chinese urban and architectural concepts.