The grounds feature several heritage buildings, many in bluestone, including a couple of chapels and a number of cast iron pavilions.
Four are interred in the cemetery's 'Prime Ministers Garden': Sir Robert Menzies (including Dame Pattie Menzies), Sir John Gorton, Malcolm Fraser and Bob Hawke (half of Hawkes ashes are at Melbourne, the other half are interred in Sydney).
Harold Holt's (including his wife Dame Zara Bate) is a memorial, as his body was never recovered after he disappeared at sea.
Fan club vigils were initially held at the monument but these were cancelled because of the undue media attention they attracted.
One particular incident saw local TV camera crews causing a traffic jam that held up a funeral procession for a recently-deceased person.