At the eastern end of Aberfeldy, the home of the famous Dewar's blend offers a good 90-minute tour. After the usual overblown film, there’s a museum section with audio guide, and an entertaining interactive blending session, as well as the tour of the whisky-making process. More expensive tours allow you to try venerable Aberfeldy single malts and others.
Aberfeldy Distillery
Highland Perthshire