Gold billboard is actually a gold billboard.

(click image, via) To promote their Summer exhibition "Treasure!", Vancouver's Science World, via Rethink Communications, covered this billboard with gold pounded so thin, 56 grams covered the entire surface. Rethink spokeswoman Jennifer Newstead says it's the first billboard of its kind in the world. Science! Pretty cool. Previous Cool Billboards:
• Kill Bill.
• the best placed fan billboard ever.
Previous Bad Billboards.