After inventing geometry and physics, Greeks invented history—primarily as a way to document their many inventions. Take a stroll through history with today’s Groupon to the Willamette Heritage Center at The Mill. Choose between the following options:

• For $4, you get two adult admissions (up to a $12 value).
• For $3, you get two children’s admissions (a $6 value).

Your Groupon can also be used for two adult admissions (a $10 value) or two children's admissions (a $6 value) to the Magic at the Mill holiday lights festival from December 19 through 23 from 5:30 p.m. to 8:30 p.m.

Willamette Heritage Center's 5-acre site, which has been designated an American Treasure by the National Park Service, preserves the original machinery, buildings, and aura of a 19th century wool mill. Meander through the interiors of the Jason Lee House and Parsonage, stroll past the domiciles of the Methodist missionary founders of Salem, or amble down the aisle of the Pleasant Grove Church, said to be the oldest Presbyterian church in Oregon. Hands-on activities, speakers, and rotating exhibits allow visitors to engage in a modern look at a history, much like a digitized version of their grandfather's comic-book collection. Although not included in this Groupon, those opting for membership following their visits receive unlimited free entry for a year, access to the research library and archives, and tickets to the Magic at the Mill holiday-lighting festival.