I've always loved unique street art, especially when it forces pedestrians to look at the world just a bit differently. One of my favourite new pieces of urban creativity comes from Stockholm's Sergels torg area - artist Erik Johansson created a 3D optical illusion on a sidewalk, tricking people into thinking they're jumping off a cliff. But it's just smart art, and definitely something that could attract tourists.
This 105′ by 59′ feet piece will only be available until June 12. Digital Journal previously profiled Johansson, a Swedish photographer who often manipulates images to astounding effect.
What street art astounds you? What do you think of optical illusions in cities?