Architecture is a source of emotion. Indeed, it is emotional to high degree for, like nature, it surrounds us. Both an object and a receptacle, simultaneously exterior and interior, it holds and contains us. If it hurts us, only sleep will allow us to keep our distance. That is why, while our responsibility is immense, so too is our joy when the buildings we create are imbued with the power to make people happy. In reality, it is the only objective we pursue, to establish, by means of the spaces we design, an emotional relationship with the people that visit or inhabit our creations. Based on Leon Battista Alberti’s triad – necessitas, commoditas, voluptas – this relationship achieves fulfillment in harmony. We have the opportunity to construct buildings – stations and shopping centres – which, by their very nature, play host to the largest number of visitors of any buildings anywhere. A huge number of people either live in or experience our structures, which puts our capacity to stir the emotions to an even more rigorous test.