produces and distributes more beer than anywhere in the state. Bayern Brewing, Inc. was opened in 1987 by Jürgen Knöller as the "only German Brewery in the Rockies" and today is the oldest and second largest brewery in Montana. All beer their beer is brewed according to Reinheitsgebot, otherwise known as the German Beer Purity Law or the Bavarian Purity Law. Big Sky Brewing opened in 1995 and began as a final project for part-owner Bjorn Nabozney's finance degree at the University of Montana. Four times larger than Bayern and distributed in 24 states, Big Sky is by far Montana's largest brewery. It is also the producer of the best-selling beer in Montana, Moose Drool. Also in 1995, Kettle House Brewing Company was opened by Tim O'Leary, and though it is much smaller than the two earlier breweries, its proximity to Downtown Missoula and innovative approach to sales has assured it a loyal following. Kettle House was Missoula's first Brew on Premises, introduced the "growler", and to sell its award-winning product in 16oz cans. Missoula's fourth brewery, Draught Works, was opened in October 2011. Also in 2011, Tamarack Brewing and Flathead Lake Brewing Company from nearby Lake County opened pub houses at Downtown Missoula locations. The Garden City Brewfest was started in 1993 by four Missoula business owners with the hopes of introducing new microbrews to the Missoula market. Originally called BRIWfest after its original sponsors (Bayern Brewing Co., the Rhinoceros, the Iron Horse, and Worden's Market), the festival was given its present name in 2003 when it was given to the Missoula Downtown Association. The event now draws thousands to Downtown's Caras Park to sample beers from across the region, listen to live music, and sample food from local restaurants. In addition to the Garden City Brewfest, the Montana Brewers Association announced that the 4th Annual Montana Brewers Festival would be held in Missoula. Points of interest Missoula is located near the Rattlesnake Wilderness and Rattlesnake National Recreation Area, two areas that protect Missoula's municipal watershed and serve as wildlife habitat and recreational areas. The Forest Service's smokejumper base, the largest of its kind, is located near the Missoula airport. Free tours of the base are undertaken by tourists during the summer wildfire season. A walking bridge over the downtown yards of the Montana Rail Link railroad is a destination for railfans. In April, 2011, the National Park Service