Willamette Heritage Center is at 1313 Mill St. S.E. The 5.5-acre historic park features three historic homes, a church and eight buildings from the Thomas Kay Woolen Mill, founded in 1889. A millrace that passes through the grounds was the sole power source for the mill for most of its active years. Tours of the buildings explore the architecture and lifestyles of the area's native inhabitants, early 19th-century Euro-American settlers and turn-of-the-20th-century industrial beginnings. The center also features seasonal historical exhibits.