The ACT offers many great public spaces at which to get married. Around Lake Burley Griffin and at one of the Old Parliament House Gardens are just a few of the options. A less well known spot, though so gorgeous, is Norgrove Park in Kingston. My picture of Norgrove Park with the white and lilac wisteria happily in bloom positively says it all!
If you are planning to marry in a public space, useful information on public venues and the process for securing such a venue is available at https://www.nca.gov.au. It’s worth exploring this early in your marriage ceremony planning so you can secure your preferred spot.