DK's Eyewitness Travel Guides are our best travel companion during our tour of Europe. Full of tips, pictures, maps, site info, history, local reference ... every page is not only helpful but beautiful. The layout anf format is very innovative and reader friendly, a ture standing out from any other travel books. It was interesting to see that almost everywhere we went, we saw other people (tourists apparently) holding and checking the same DK book on the street.
The coverage is comprehensive and growing year after year, Paris, Rome, Florence, Venice ... every city we went have its own Eyewitness serie. We studied them before our trip, consulted them during our trip, and kept them as memo and photo book after our trip. They are simply essential part of the travel fun.

I recommend buying indiviual city/area book wherever possible instead of the country book. For example, buy Rome, Florence, and Venice books instead of Eyewitness Italy (unless your destination doesn't have its own Eyewitness). That way you get more detailed and targeted info.