Take the world's most versatile building material, mix in 21st century technology and some world-class architects and what do you have? Some very interesting concrete-made structures or, as this article states, "...But the aesthetic and atmospheric qualities of concrete architecture are not just about shape-making. It’s about the feel of the material, the light and shadow it creates, its particular sense of "grunt" – or its lightness and delicacy. Concrete can make asymmetry as graceful as symmetry, or turn volumes of space into engrossing mysteries."