Here are some pictures of the largest gold bar in the world. It was created by the Mitsubishi Materials Corporation back in 2005.
It weighs 551 pounds, measures 17.9 in x 8.9 in x 6.7 in.
In 2005 it was valued at just over $3.6 million. 2011 gold prices have it valued somewhere around $15.3 million.
This is a good argument for gold being an excellent investment. For the pessimists out there, its probably over bought and will go down.