King Nebuchadnezzar made an image of gold, sixty cubits high and six cubits wide, and set it up on the plain of Dura in the province of Babylon. (Daniel 3:1)
Did these sizes represent something in the Babylon time?
The sizes didn't represent anything special themselves, but if you know them, then you know that this "image of gold" was not a mere statue - from the given proportions (10:1 ratio) you could conclude that it was an obelisk. Obelisks in ancient world could have special meanings and purposes. Some of them were considered "sacred pillars". Pliny the Elder in The Natural History (Book 36, Chapters 14-15) describes them as objects often associated with Sun worphip. Similarily, Ammianus Marcellinus in his Roman History (Book 17). There are conflicting opinions about how to interpret Hebrew words used by Daniel in this verse and not everyones agrees on the concept of obelisk, but the proportions of the image (10:1 ratio) suggest it strongly.