Why egg-cellent designs are the shape of things to come

Does the National Center for the Performing Arts, or National Grand Theater, look like a "duck egg" or "jellyfish"? Its French architect, Paul Andreu, reckons it looks more like an egg. "But I still can't figure out why it has to be a duck's egg."

He compared the dome's shape to an eggshell, which can endure enormous pressure. The dome weighs 6,475 tons and spans 212.2 m, creating the world's largest arch.

The theater has three main halls - a 2,416-seat opera house, a 2,017-seat concert hall with pipe organ and a 1,040-seat theater for plays.