Should be able to find books for those big cities easily. I bought one for London before that has enough info.
But when I went to Berlin, Lisbon, Venice or Vienna.... I didn't buy any books. Just try to search the information online.
You may download the following webs to your iphone and ipad. They are very informative and helpful when traveling.
http://www.tripadvisor.com/apps
http://www.tripomatic.com/trip/The-Best-Things-to-do-in-Paris/
http://www.triposo.com/loc/France
http://www.italyguides.it/us/italy_travel.htmhttp://www.planetware.com/europe-travel.htm