Buzz·Posted on Aug 13, 2012The Six Best Billboards Of The Last Six YearsYou've maybe already seen some "best of" billboard posts. But this is the best of the best.by copyranterBuzzFeed StaffFacebookPinterestTwitterMailLink 1. Denver Water, through their ad agency Sukle, has produced many good billboards.This is my favorite. 2. Vancouver's Science World, through their ad agency Rethink, has also produced much good advertising.This gold billboard is really a gold billboard. 3. This is a real billboard stunt that was put up near a busy intersection in Auckland, NZ.Ad agency: Saatchi & Saatchi. 4. Well-placed board won a bronze lion at Cannes in 2009. That's the Haitong Securities building in Shanghai, fairly famous in the architectural world for its unique wave design. Created by Firstell Communications. 5. This is so fucking cool. Hot Wheels installation, via Bogota, Colombia.Ad agency: Ogilvy & Mather. 6. A classic, via Germany. I Wonder how many fake dead pigeons the agency had at the ready to keep replacing the stolen ones. Ad agency: Venividi.