Now, the arch spectacular, the roof and the architectural achievement, the 90,000 red seats - only 55,700 of which were occupied yesterday - are a vivid array.

But while that's an achievement, it's not an architectural achievement.

However, the site remains a great architectural achievement for a 17th-century military structure.

They are conscious celebrations of the most up-to-date architectural achievements of an expanding economy and a growing military might.

I salute their architectural achievements.