In the design of Beijing's Terminal 3, Norman Foster delivers the performance of spectatorship, but resists solitude, by reintroducing the sumptuous and grand spaces typical of train station concourses. The terminal structure is gigantesque -- covering over one million square meters -- making it the world's largest airport building\cite{foster:2008}. Yet, the Beijing terminal is not the `endless building' posited by Rem Koolhaas --- a continuous sweeping space whose borders are delimited by the presence of air conditioning\cite{koolhaas:2002}. Despite being massive, the terminal is `an array of functionally diverse spaces'\cite{pascoe:2002} under a single unifying roof. The building consists of two large triangular structures connected to each other via one of their vertices. At the far edges of the triangles are the domestic and international terminals, respectively.%\begin{figure}[ht!]