Brock Weston from Landscape Services mows the lawn on the roof of Parliament House.

Dawn at Parliament House: a representative from Canberra Queenbeyan Cleaning Services readies the entrance pond for the day ahead.

The Australian Coat of Arms bears a kangaroo and an emu.

Cleaners Tam Thi Duong (left) and Chanmala Souksavat vacuum the gallery of the Senate.

New MPs and senators can choose art for their offices from an enormous collection of contemporary Australian art, managed by Alva Maguire (right).

Aldo Giurgola, 92, is the architect behind Parliament House, which took seven years and $1.2 billion to construct.

Office of the Prime Minister, Parliament House, Canberra.

Tourists pose for photos on the mosaic outside Parliament House, Canberra.

Security Officer Annyse Charlton stands in the public area of Parliament House, which makes up about 20 per cent of the building.

A grand marble staircase looms over the main foyer of Parliment House.

Tim Stephens, manager of the guest’s dining room, discusses the menu with chef de partie Nathan Cooper.