Tyree Guyton is a popular local hero in Detroit, although it's taken years for him to reach the elite status he now occupies. He's taken inner-city houses and fields--previously rundown and littered with trash--and created controversial art installations, each with deep meaning beyond the visual. Guyton grew up on Heidelberg and Ellery Streets in…

Machu Picchu, the lost city of the Incas in Peru, was recently voted one of the new Seven Wonders of the World. Also in Peru are the mysterious Nazca Lines--a humming bird, a spider, and trapezoids--which are etched in the desert so large they can only be seen from an airplane. The author experienced some of these places recently when he and his…