Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Best Travel Guides

The "Eyewitness Guides" are the best travel guides I have ever used. I discovered them over 15 years ago and have been relying on them ever since. I own more than 15 of them, for major cities and countries throughout Europe. They are accurate and make travel much easier to plan if they are read in advance. I particularly like the architectural cutaways used for museums and sites of interest. The maps and geographical area breakdowns are also extremely helpful. I can't recommend them strongly enough.