Lilian Daphne Mayo was an Australian artist, most prominently known for her work in sculpture, particularly the tympanum of Brisbane City Hall and the Women's War Memorial in ANZAC Square.

Brisbane City Hall, in Brisbane, Queensland, Australia, is the seat of the Brisbane City Council. It is located adjacent to King George Square, where the rectangular City Hall has its main entrance. The City Hall also has frontages and entrances in both Ann Street and Adelaide Street. The building design is based on a combination of the Roman Pantheon, and St Mark's Campanile in Venice and is considered one of Brisbane's finest buildings. It was listed on the Register of the National Estate in 1978 and on the Queensland Heritage Register in 1992. It is also iconic for its Westminster chimes which sound on the quarter-hour.