Amazing Billboards Illusion

There were just so many original and witty ones, it was hard for me to distinguish those that can pass as optical illusions. Luckily, Emma Chuck-Jackson pointed me to a nice collection, where I handpicked three of them and decided to share with you. You can see the rest over here. In the first one, you may see an ad for Calcutta-base Berger Paints, one they used for their Natural Finish Colours range, using cut out roller strokes so the sky appears to be painted on by the dangling decorator. Other one is for Law and Order, and the third one advertises a museum I think… Liked them?