Ivy Mills Historic District - Credit: Wikimedia Commons
The Ivy Mills Historic District is a national historic district located in Concord Township, Delaware County, Pennsylvania, United States. It encompasses the ruins of a paper mill (erected 1829), a clerk's house (built circa 1830), and the Ivy Mills Mansion House (built 1837). The mansion house is a 2 1/2-story, five bay wide, stuccoed masonry structure, which includes a saltbox wing and a wide verandah. The original paper mill was erected in 1729, and the original mansion house in 1744. Both of the original buildings were replaced in the early-19th century by the present buildings. Read more on Wikipedia
Source: en.wikipedia.org