I wore these to walk all over Europe this summer.  They were comfortable for the most part and protected my feet from the dirty streets of Italy.  But, if you are walking 7-8 hours a day sightseeing, I'm not sure these are the best choice.  I'm not sure there is a best choice when walking that much.  My feet were very sore at the end of the day while wearing these shoes.  But, I still love them, they style is great, the colors are great, I'm debating buying more colors.  I also saw many others in Europe wearing some version of Keen shoes which says a lot.  Overall, I'd recommend.