Especially in Paris or Barcelona with young children (ours are 6 and 8 years old)? I've read lots of trip advisor reviews on their free group tours but I'm not sure my kids would get as much out of it so I was considering doing one of their family private tours. Anyone have any experience with these? Thanks!
http://www.discoverwalks.com/paris-walking-tours/family-paris-walking-tours/
http://www.discoverwalks.com/barcelona-walking-tours/family-walking-tours/