The billboards with an added dimension

[enlightened1]

This startling advert, over the entrance to a tunnel, is trying to entice Austrian motorists to stop off at Oldtimer, a chain of motorway rest-stops

This provocative underwear poster in New Zealand has a giant skirt attached and when the wind blows it whips up to reveal all

Americans thought twice about leaving their seatbelts undone, thanks to this giant catapult

To convince us Formula toothpaste 'builds strong teeth', the bottom corner of the poster was removed and fake ties stuck on the back to add to the illusion

The American Bloom supermarket used 3D cakes to advertise its Bloomberry muffins. Then the sign was swapped for one where a jumbo muffin had crushed the hire car below

There's nothing subtle about this in-your-face American advert for diarrhoea treatment Imodium, with its huge empty toilet roll attached to the billboard

A green tidal wave was created to promote Nationwide Insurance in Texas. The company had to hire the wall, the car park and the three vehicles before letting loose with the paint

A farmer in America hired out his field to Bic razors for a close shave​