fishing, snowmobiling, hunting, and hiking opportunities, many Lower Peninsula and Wisconsin families spend their vacations in the UP, and tourists visit from Detroit, Chicago, Grand Rapids, Milwaukee, and other metropolitan areas. The opening of the Mackinac Bridge in 1957 (see below) has made the Upper Peninsula easily accessible to tourists from the Lower Peninsula and southeast of Michigan, and has helped make the UP a year-round tourist destination. In 2004, microbreweries began opening across the Upper Peninsula; 14 opened by 2014, and 23 by 2019. In 2019, their annual economic impact totaled $346 million. , three of Michigan's fifty largest breweries were in the Upper Peninsula: Keweenaw Brewing Company, Blackrocks Brewery, and the Ore Dock Brewing Company. Notable attractions Adventure Mine Agate Falls Au Sable Light Station Black River National Forest Scenic Byway Bond Falls Brockway Mountain Drive Calumet Theatre Calumet Downtown Historic District Castle Rock Copper Harbor Copper Peak, Ironwood Township DeYoung Family Zoo Fayette Historic State Park Fort Mackinac Fort Wilkins Historic State Park Garlyn Zoo Grand Hotel (Mackinac Island) Grand Island National Recreation Area Grand Sable Dunes The Great Lakes Shipwreck Museum Iron County Historical Museum Complex – Caspian Iron Mountain Iron Mine – Vulcan Isle Royale National Park The Keystone Bridge- Ramsay, Michigan Keweenaw National Historical Park Keweenaw Waterway and Portage Lake Lift Bridge Kitch-iti-kipi Lake Superior Lake Superior State University, Lakers Laughing Whitefish Falls Mackinac Bridge Mackinac Island Marquette Arts and Culture Center – Marquette The Marquette Lighthouse Marquette Mountain Ski Resort Michigan Iron Industry Museum – Negaunee Michigan Technological University Mount Bohemia ski center (with the highest vertical drop, , in the Midwest) Munising Falls National Ski Hall of Fame Northern Michigan University Marquette Ore Dock Oswald's Bear Ranch Paulding Light Pictured Rocks National Lakeshore Pine Mountain ski jump in Iron Mountain is one of the largest artificial ski jumps in the world. Point Iroquois Lighthouse Porcupine Mountains State Park Presque Isle Park, Marquette, Michigan Quincy Copper Mine offering guided tours Seney National Wildlife Refuge Ski Brule in Iron River The Soo Locks Suicide Hill Ski Jump, Ishpeming, Michigan Sylvania Wilderness Tahquamenon Falls State Park Upper Peninsula Children's Museum – Marquette Casinos American Indian casinos contribute to the tourist attractions and are popular in the UP. Originally the casinos were simple, one-room affairs. Some of the casinos are now quite elaborate and are being developed as part of resort and conference facilities, including features