Sydney Opera House: How a Mathematical Breakthrough Turned an 'Impossible' Roof into an Icon

In 1957, Jørn Utzon won a competition with stunning but unbuilable sketches. Four years of engineering failure followed — until a sphere solved everything. Here's how 1.05 million ceramic tiles, 2,194 concrete ribs, and one man's forced resignation gave the world its most recognizable building.

A weekly 1-minute video series uncovering how the world's most iconic structures were built — from ancient wonders to modern skyscrapers.