Cedar Grove Mansion - Credit: Wikimedia Commons
Cedar Grove Mansion, located in west Fairmount Park, was the summer residence for five generations of Philadelphia families. The house was built as a rural retreat from city life, and was originally located within the present day Frankford neighborhood of Northeast Philadelphia, about beyond the colonial-era city limits. In 1746, Elizabeth Coates Paschall purchased the property on which the house was subsequently built. Paschall was a widow with three children who had inherited her husband's dry goods business and desired a rural retreat from the city near her father's farm in Frankford. Construction of the grey stone house on a plot of along Frankford Road began in 1748 and continued to 1750. Read more on Wikipedia
Source: en.wikipedia.org