I visited the National Capital Exhibition which provided me with all of this information, through interesting exhibits, photos and video presentations. I had no idea before I came to Canberra that it was designed so specifically for a purpose and that it is so recent.
Many feel Canberra hasn't got much to offer and that it lacks character. It certainly lacks historical buildings however it doesn't lack history, albeit more recent history. There are also some up and coming 'hipster' areas which might bring more backpackers in. Generally if you aren't interested in museums, history, art or hiking in the bush then there's maybe not much for you.

The Old and New Parliament Houses are also landmarks not just in Canberra but Australia. The Old Parliament House is now a museum for Australian political history and democracy, while the New Parliament House which sits on a hill makes for good photos of the straight line down to the Old Parliament House, ANZAC parade, the War Memorial and lastly Mount Ainslie at the end. There are also botanic gardens and numerous national parks and city nature parks and creeks for swimming.
During my visit there was a multicultural festival, so the city was full of people. Apparently it's not normally like that. There was delicious food from many countries and music. I particularly enjoyed the aboriginal performances with their singing and dancing which imitate animals and the elements.
Canberra has a few of vegan cafés and I met two vegan girls while I was there. There was also a student atmosphere during weekdays in Civic (the main city centre) as it was the beginning of term for the universities including the well-known ANU - Australian National University. ANU runs weekly free lectures for the public. I also enjoyed a bit of eccentricity at the Phoenix pub's monthly open-mic 'poetry' evening.
Vegan cupcakes (the ones on the right half) YUM!