is a collection of six historic homes, a replica of a one-room school house, a chapel and store on 2.5 acres just south of the downtown McKinney square.  The grounds also include a blacksmith shop, smoke house, and beautiful chapel and reception gardens.  The buildings include period artifacts showing how people lived in Collin County from 1854-1930. Chestnut Square is owned by the Heritage Guild of Collin County, a 501(c)(3) charitable organization. Your particpation in our events supports our educational programs, building maintenance and large museum collection including furniture, paintings. household items architectural pieces, book, and clothing.