These 2 pictures show us some hard core guerrilla marketing examples.
Image 1: LEGO’s really creative billboard that inspires the kid in you.
Image 2: LOVE this creative billboard by WWF. Unique overhang places shadow on billboard to create this changing message

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    LEGO’s really creative billboard that inspires the kid in you.

    LOVE this creative billboard by WWF. Unique overhang places shadow on billboard to create this changing message