Doors Open Markham
Saturday, September 20, 2025, from 10 a.m. to 5 p.m.
Doors Open Markham is back!
Explore a variety of buildings across the city as they open their doors to the public - for one day only! Doors Open Markham offers a rare behind-the-scenes look at select sites throughout Markham, including free access to buildings that typically charge admission. From cultural and heritage landmarks to innovative spaces, this is a unique opportunity to discover the stories and inspirations that have shaped our city.
Doors Open Ontario is a provincewide heritage tourism program that provides free public access to unique and historically significant sites across Ontario. The City of Markham is proud to once again participate in this exciting event.
Volunteer with Doors Open Markham
Volunteer applications for Doors Open Markham will open in August 2025. Please check back here for more information on how you can get involved.
Doors Open Markham is a one-day, city-wide event that invites the public to explore a variety of unique buildings throughout the city, many of which are not normally open to the public or typically charge admission. This event offers visitors a rare, behind-the-scenes look at some of Markham’s most fascinating sites, all free of charge!
We will be seeking enthusiastic volunteers to help support this exciting event. Volunteers will be assigned to one of our participating locations across Markham to welcome guests and provide basic site information.
Must-See Attractions
Browse our selection of in-person Doors Open sites below. This list will continue to be updated as more locations are confirmed, so be sure to check back often for the most up-to-date information.
Cedar Grove Community Centre
Public School S.S. No. 20, built in 1869, replaced an earlier log schoolhouse to serve the local Mennonite and Presbyterian communities. The current structure is a particularly handsome and well-preserved example of the single-room Victorian-era schoolhouse. Home to students for almost 100 years, it was closed in the 1960s. but continues to serve the local community as a meeting facility.
Heintzman House
Heintzman House is one of the oldest buildings in Markham. Originally built as an adobe brick cottage dating from the early 19th century, the house was enlarged by Colonel George Crookshank in 1817. Charles T. Heintzman, grandson of the founder of Toronto’s Heintzman Piano Company, purchased the property in the 1930s and transformed the house into its present, elegant form.
York Region District School Board’s Museum & Archives
Located in the former Brown’s Corner/Buttonville Schoolhouse, the York Region District School Board’s Museum & Archives collects and preserves the history of public education in York Region. The collections, from the 1850s, reflect ongoing changes to public education. Come and experience life as a student in the late 1800s by writing with pen and ink and on a slate.
York University's Markham Campus
York University’s new state-of-the-art campus is in Markham Centre, the community’s new downtown. The design of this building defines a collegial academic community within a series of interconnected, multi-storey spaces. Academic programs and research revolve around technology and entrepreneurship. Come and take a tour of this fascinating site. Parking is available at the Pan Am Sports Centre next door.