All our projects are like fabulous expeditions. The story of each project is unique. Our projects have no precedent.

It's very important to understand that we never do the same thing twice; each of our projects is unique. We'll never do another 'Gates.' Each project is a unique image. We do not know in advance how the work will look. I do preparatory drawings, but they are only projections of our vision.

Now, to describe the process of the Wrapped Reichstag, which went from 1971 to '95, there is an entire book about that, because each one of our projects has its own book. The book is not an art book, meaning it's not written by an art historian.

The great power of the project is that it's absolutely irrational. And that disturbs, angers the sound human perception of a capitalist society. That is also a part of the project, this is the idea of the project, to put in doubt all the values.

And for every project, because it takes years, you can see the early drawings and collages as just a simple, vague idea, and through the years and through the negotiations of getting the permit, you see that every detail is now clarified.

If some of our works are symphonies, then wrapped walkways was chamber music.