Stadium Architecture: From Colosseum to Modern Marvels

The Colosseum held 50,000 in 80 AD. Modern stadiums use retractable roofs, movable pitches, and LED facades. Allianz Arena changes color.

SoFi Stadium cost 5.5 billion dollars. Tottenham has an NFL pitch under the football pitch. The Birds Nest used 42,000 tons of steel..