The main tower is 66 floors of offices and 38 floors of a Four Seasons hotel arranged around a dramatic tapering atrium.

The beauty of its diagrid structure lies in its inherent stiffness, which in turn gives it its strength. Each diamond is 54 metres or 12 storeys high, reducing the amount of steel required for the construction by 20%.

This is a hugely complex project that appears to be extraordinarily simple, like most of the best things in life.