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.

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

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

We have created indoor installations inside museums, like the Wrapped Floor at the Museum of Contemporary Art in Chicago in 1968, and not monumental at all by any standards.

It appears to be monumental only because it's art.

We never work on only one project because we never know if we will get permission for a project. So, for 'Over the River,' we started in 1992. I was just finishing 'The Umbrellas' in Japan and California, and I was also working on getting permission to wrap the Reichstag.