Earlier this week, Burger King erected a billboard in Istanbul made out of 2,548 packets of hot sauce (empty and full).
That's just one of many bizarre materials used to make outdoor ads.
From out-of-date electronics to live bacteria, companies and ad agencies have made incredible billboards from unexpected objects.
2,548 hot sauce containers: Burger King

Young & Rubicam, Istanbul used 2,548 hot sauce packets to make this Burger King billboard.
20,000 one-pence coins: Chevrolet Aveo

It only took 30 minutes for passers by to strip this 20-foot billboard clean of its 20,000 pennies on Oxford Street.
Bacteria: Poster for Contagion

CURB Media and Lowe Roche made a poster for Contagion out of bacteria that grew into the shape of the title in Canada. Gross. Watch the video of how it was done.
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