The Sydney park where Australia's federation was inaugurated has been heritage listed.
Sydney's Centennial Park has been added to the National Heritage Register for its "outstanding heritage value to the nation".
"It is the largest remaining Victorian-era park in Australia and substantially retains its layout and design as envisaged in the original plan," the entry for Centennial Park on the register said.
Treasurer Josh Frydenberg said the park holds a special place in Australia's history, featuring in the events of 1901, the year when the country became a federation.
"This is because this place was where Australia was born," he said.
"It is here that our federation was inaugurated. Our Constitution was proclaimed. Our first Governor-General, Lord Hopetoun, was sworn in. Our first Prime Minister, Edward Barton, was sworn in, and the first cabinet of Australia was sworn in."
He thanked former prime minister and member for Wentworth Malcolm Turnbull for his advocacy work in making the park heritage-listed.
NSW Environment Minster Gabrielle Upton said the announcement comes on 130th birthday of the park.
"This is an amazing birthday present for Centennial Park. It is a People's Park," she said.
"It is a living, breathing place...it is used by dog walkers, cyclists, a place of serenity, a refuge from the close by Metropolitan of Sydney."
Ms Upton said the park receives 14 million people each year.
Mr Frydenberg said the park will be protected from the development under the Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act).
The Commonwealth Heritage List includes natural, Indigenous and historic heritage places which are either entirely within a Commonwealth area, or outside the Australian jurisdiction and owned or leased by the Commonwealth or a Commonwealth Authority; and which the Minister is satisfied have one or more Commonwealth Heritage values.