We can't all build the Taj Mahal, but anyone with a tiny plot of land or even a balcony or rooftop can create a mini-paradise. All it takes is some old tin cans or a pink flamingo or a scrap of chicken wire plus a LOT of creativity. The Independent Television service has launched a new Web site called Off The Map that explores the weird world of visionary backyard artists. Click on a map and you can see a homespun castle in France, a whirligig garden in North Carolina, or eight other oddball places. You can also send in photos of your own backyard paradise and view photos submitted by other readers. See the backyard paradises...