Hundreds of dedication plaques line Kings Park's Honour Avenues, poignantly set against a backdrop of eucalypt trees. The plaques have been carefully maintained by the Honour Avenues Group, on behalf of the Botanic Gardens and Parks Authority, for many years. A database of information on the plaques is held on the Honour Avenues Group website.

State service personnel who died during war service and were either buried overseas or have no known graves are remembered along May Drive, Lovekin Drive and Marri Walk. Plaques dedicated to dignitaries during the 1929 Centenary of Western Australia line Fraser Avenue.

Dedication ceremonies for new plaques are held each year for plaques approved by the Honour Avenues Group.