I also read Lila, which is the 'prequel' if I recall to Zen. Not nearly as enjoyable.
I read Zen while on a 3 month stay on the Navajo nation in Window Rock Arizona. Spent a lot of time travelling around the area, including the drive there and back from Canada. Great timing to read the book. Unfortunately I was driving my car, but it did make me stop and get out every once in a while in the middle of nowhere (which when you're driving through South Dakota, Montana, Colorado, Kansas, New Mexico, Arizona, Utah etc. is pretty much everywhere
.
There is a lot to be said about being 'in' the scene vs. watching it through the tv screen that is your car's windshield.
BTW - the picture on my earlier post is of my tattoo that I had done in Toronto by a fantastic artist named Kathy Body at Abstract Arts back in the early 90's. She did a great job reproducing the shades of green in the leaves from the book's artwork. You need the trade sized paperback or hard cover to see the artwork in color I think.