Viking River Cruise website – http://www.vikingrivercruises.com/
Michelin also has a green guide for Paris. I already own it, but did not bring it on the trip because I have been to Paris many time ( I am happy to say!) and the amount of time we would be there did not justify hauling another book around. However, I did pick up a Kindle book that I thought would be fun to take a long, and actually used some of the suggestions in it to fill our days in Paris. It is Paris for Tourists.
Michelin does not have a guide to the Czech Republic, so I bought and read the National Geographic Traveler “Prague and the Czech Republic. This was good, but I am nerd for the Michelin Guides and their detail! I also like the Michelin rating system of 1-2-3 stars, to make sure I see the best of the best, especially when time is short.