"The Floating Pearl . . . or a duck egg"

BEIJING — Compared variously to a floating pearl and a duck egg, the titanium-and-glass half-dome of the National Center for the Performing Arts formally opened its underwater entryway to Chinese officials and dignitaries here in December.

The $400 million complex, a concert hall, opera house and theater under one space age span, is designed to be the center of Chinese culture, just as Tiananmen Square next door was designated this country’s political center.

The complex’s lush, dazzling interior, sophisticated acoustics and mechanical wizardry rival any hall in Europe or the United States, its promoters say.