Just came across this website today--very helpful in getting information about pipe shops in various countries in Europe, parts of Asia (Taiwan, Thailand, Japan), and even a few in the USA. I think it's in French, but if you have the Google Translate app on your computer you can easily translate the pages. Lots of information about individual shops and includes a number of photos. Worth a look if you are traveling overseas in the near future!
http://www.fumeursdepipe.net/bonnesadresses.htm
http://www.fumeursdepipe.net/bonnesadresses.htm