Located in Appleton Village, in Knox County, Maine the Appleton Union Meeting House is a classic example of a double entry, double-aisle mid-nineteenth century New England Greek Revival style meeting house. It was built in the years before the Civil War, in the relatively prosperous time just before the peak of population was attained in the town, and just five years after this thriving village of McLain's Mills (now known as Appleton Village) was transferred from the Town of Hope to the Town of Appleton with attendant civic enthusiasm. It reflects a type of Protestant church being constructed in rural communities of the day; a simple rectangular post and beam framed structure with vestibule, auditorium, and rear balcony gallery, and a tower topped by a spire and centered on front gable. Its twin entrances and double aisles reflect an aversion towards ecclesial processions and its simple but refined interior finish and modified box pews also reflect a conservative protestant tradition. The Appleton Union Meeting House has been listed in the National Register of Historic Places as a locally significant example of a type of rural church architecture. The period of significance reflects the date, 1848, when the building was designed and erected. A second significant period is c. 1910, by which date relatively minor alterations in the steeple and window sashes had taken place. The building is owned and maintained by the Appleton Historical Society.