BEIJING  If Westerners feel dazed and confused upon exiting the plane at the new international airport terminal here, it’s understandable. It’s not just the grandeur of the space. It’s the inescapable feeling that you’re passing through a portal to another world, one whose fierce embrace of change has left Western nations in the dust.

The sensation is comparable to the epiphany that Adolf Loos, the Viennese architect, experienced when he stepped off a steamship in New York Harbor more than a century ago. He had crossed a threshold into the future; Europe, he realized, was now culturally obsolete.

Designed by Norman Foster, Beijing’s glittering air terminal is joined by a remarkable list of other new monuments here: Paul Andreu’s egg-shaped National Theater; Herzog & de Meuron’s National Stadium, known as the bird’s nest; PTW’s National Aquatics Center, with its pillowy translucent exterior; and Rem Koolhaas’s headquarters for the CCTV television authority, whose slanting, interconnected forms are among the most imaginative architectural feats in recent memory.

Critics have incessantly described these high-profile projects as bullish expressions of the nation’s budding global primacy. Yet these buildings are not simply blunt expressions of power. Like the great monuments of 16th-century Rome or 19th-century Paris, China’s new architecture exudes an aura that has as much to do with intellectual ferment as economic clout.