When commuters turned up at Waterloo Station this morning they could have been forgiven for thinking their luck had finally come in.
Would they buy a yacht, pack their job in and go on a holiday or buy that super-car they’d always wanted?
Unfortunately the mountains of cash that they could see cascading out of an opened vault onto the station’s floor were in fact just part of an elaborate 3D piece of art drawn in chalk.
Mounted on a fake wall in the middle of the station, the image shows a giant vault in a brick wall that is over-spilling with banknotes.
This is actually the latest three-dimensional street painting by renowned American artist Kurt Wenner. A former Nasa illustrator, he began street painting in Rome in 1982, inspired by Renaissance frescos and sculptures.
He translated anamorphism - the technique used by classical artists to create the illusion of height - into a new way of painting to give depth to the street surface.
The art form became known as anamorphic, illusionistic or simply 3D art, and has gained huge popularity around the world.
His latest work, seen here in these remarkable photographs, looks even more stunning when viewed through 3D glasses.
The work was commissioned by price comparison website comparethemarket.com to demonstrate just how much money - £16 million - they believe they have saved their customers on their car insurance policies this year.
Wenner tends to concentrate on classical myths and legends - other works have included Neptune's revenge and the love story of Echo and Narcissus.
One of his first commissions was a piece to honour the visit of Pope John Paul II to the Italian city of Mantua.
This is not the first time his work has brightened up Waterloo Station. Last year he created an image of a woman sitting on a sofa while a taxi crashed through her front wall, which was commissioned by Sky HD to promote its new advertising campaign.