My favorite tour service: "Know before you go"
Viator - tours, activities, things to do:
Viator is the leading online provider of destination travel products: sightseeing tours, theater tickets, attraction passes, theme parks, even zero gravity flights...the things you do when you get there. Our market-leading selection of products includes 4,000+ tours and attractions, in over 400 destinations located in 65+ countries worldwide. http://www.virtual-travel.info/viator.html
February 3 on Oodle