The flag that flies on the mast is 12.8 x 6.4 metres
That is roughly the size of a double-decker bus.
Visitors are welcome to walk on the grass ramps covering the building.
The lift to the roof is marked on the floor plan in the Visitor Guide, which is available from the Information Desk in The Marble Foyer.
The flagmast is 81 metres tall
It marks the exact centre of Parliament House. It is made of polished stainless steel from Newcastle, New South Wales, and weighs more than 220 tonnes, making it one of the largest stainless steel structures in the world.