I am very interested in taking a wine tasting tour of a vineyard.
I have done some searches and keep finding those with more than one day tours…. and most a very expensive.

What am I looking for? Well, my idea would be to walk up to a vineyard/winery and take a wine tasting tour of there wines. Also a tour that doesnt last all day either, although if the price is right. I wouldnt rule out a 6+ hour tour.

Something in the price range of 30-60 euros per person.

cities I will be looking to do this in are Barcelona, Venice, and Rome

if I cant get any info before I arrive to these cities, were can I go to look for these tours at? tourist information ? restaurants ? train stations ? airports ? bus stations ?

thanks in advance