Yeah, you could simply walk around and look up throughout Paris, but why not keep your nose pointed to a GPS-enabled PDA to truly enjoy a city. Digi-Guide is a PDA based program that uses GPS to give a walking tour of Paris. The PDA and software can be rented from a participating retailer in Paris and will provide guides and information about everything Paris. The rental fee is €30 or around $37. Kind of a neat guide and it sure beats out walking around town in a group of 20 people all wearing headphones listening to somebody talk about the attractions while walking backwards.