Surrealist paintings may seem unsettling and completely irrational but the influence of this artistic movement cannot be denied. Learn more about this genre by looking at the paintings of Salvador Dalí, René Magritte and Dorothea Tanning.

Having already painted American icons from rapper Notorious B.I.G. to the King of Pop over the course of his career, New York-based artist Kehinde Wiley will now be painting the most recent president of the United States - Barack Obama.