Markham Museum (in the past known as The Markham District Historical Museum and later Markham Museum & Historic Village) is a 25-acre (10 ha) open-air museum, located in Markham, Ontario, Canada. It is dedicated to the preservation of old buildings and artefacts from Markham's past, especially as a rural village has become an urban centre. The site features nearly 30 buildings: houses, barns, sheds, a train station, a school, a general store, a church, a blacksmith, a harness shop, a saw mill, a cider mill, and many more.