the centrepiece of enlighten canberra is the illuminating Lighting of canberra 's cultural institutions after dark , including old parliament house , parliament house and the national gallery of australia ( since the 2011 event Social_event ) as well as the national portrait gallery and unk ( since the 2012 event Social_event ) .

An 82c stamp of an Arthur Guinness portrait was also released Publishing by An Post to commemorate the anniversary .