Back in 1901, the states of Australia decided to hook up and form a country. It was agreed that the capital mustn't be Sydney, but would be in a special territory carved out of New South Wales, somewhere between Sydney and Melbourne. In the meantime, Melbourne was the temporary capital, but after long searching, a site was chosen, and in 1913 the new capital city, Canberra, was founded.
Now it's 2013, and it's time to celebrate the 100th anniversary of this event. So we made a big hot-air balloon in the shape of a giant whale with ten enormous boobies hanging off it, and floated it over the city, because nothing says "100 years* of our nation's capital!" like a giant ten-titted skywhale.
*actually, it says 300,000
dollars of our nation's capital, but it only murmurs that quietly.