I've known Christo and Jeanne-Claude's works since I was a kid(I've even met them when I was a baby, I cried and screamed when Jeanne-Claude tried to hold me), but it was when I was studying fashion in college that I took better interest in their works, because I felt the concept of their works had some things in common with the concept of fashion design.
This quote from their website can probably explain their works a lot better than my poor English writing.
"Christo and Jeanne-Claude's works are entire environments, whether they are urban or rural. The artists temporarily use one part of the environment. In doing so, we see and perceive the whole environment with new eyes and a new consciousness.
The effect is astounding. To be in the presence of one of these artworks is to have your reality rocked. You see things you have never seen before. You also get to see the fabric manifest things that cannot usually be seen, like the wind blowing, or the sun reflecting in ways it had not before.
The effect lasts longer than the actual work of art. Years after every physical trace has been removed and the materials recycled, original visitors can still see and feel them in their minds when they return to the sites of the artworks.
There is no other way to describe that the feeling of that effect other than to say it is magical."
written by Jok Church
Christo and Jeanne-Claude's website