The Mission Mill Museum is located in Salem, Oregon. The museum complex contains beautiful grounds, a millstream and 14 historic structures. Visitors can explore the grounds at their own leisure through guided or self-guided tours. The museum's largest buildings are the 1889 Thomas Kay Woolen Mill. The water turbine is the only one west of the Mississippi today that is still generating electric power. The woolen industry was a major economic factor in the Willamette Valley area for more than a century. In addition to the woolen mill, several historic homes were moved to the site, where they were preserved and restored. The Jason Lee home, along with other pioneer-era homes, can be found on the grounds, complete with their original furnishings. The five-acre Mission Mill complex includes beautiful gardens, gift shops, a café and the Salem Visitors Center.