The Jack Daniel Distillery - the oldest registered distillery in the U.S. - is where it all happens. It's where Mr. Jack first crafted the recipe for Old No. 7. It's where the pure, iron-free cave spring water flows. And it's where every drop of Jack Daniel's Tennessee Sippin' Whiskey is still made today. Visitors may observe every step of the sour mash whiskey-making art. Drop by for a first-hand look at the Distillery. A guide will accompany you on a tour and tell you the complete story of Jack Daniel's whiskey. And you'll probably hear an interesting story or two about Mr. Jack as well. The tour is mostly out-of-doors and involves quite a lot of walking, so be sure to wear comfortable shoes. Tours last about an hour and fifteen minutes and start at fifteen minute intervals.