WORLD'S GREATEST CONCERT HALL

On top of an old warehouse in Hamburg, the architects of Beijings Birds Nest Stadium are building a dramatic new concert hall. It’s hoped the stunning design will make Hamburg famous throughout the world. But to attract the world’s best musicians, the concert hall must sound perfect, and getting the acoustics right is notoriously difficult. To add to the pressure, the building is years behind schedule, and millions of Euros over budget.