Gun powder is Cai Guo Qiang's calling card, as the artist behind the fireworks displays of the Beijing Olympics, having also won the coveted Golden Lion award at the Venice Bienale, Cai Guo-Qiang stands today as a bona-fide rock-start in the world of arts. From his "Explosion of Ants" to his gun powder drawings, to his monumental installations, his art is unique, and one seen it's never forgotten.

Olafur Eliasson was born in Copenhagen, Denmark and it's where he still has one of his studios. The work that put Olafur on the map was the weather project, in the Turbine Hall of the Tate Modern in London, in 2003. It featured a glowing, half sun, that was reflected and completed by a mirror in the ceiling. Smoke and mirrors is one of his specialities.