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
We’re looking for enthusiastic volunteers who enjoy engaging with the public to help make Doors Open Markham a success!
Volunteer roles include greeting and welcoming visitors, distributing event materials, tracking visitor attendance, managing lineups, and encouraging guests to complete visitor surveys.
If you're 14 or older and passionate about your community, we’d love for you to share your talents, skills, and experiences to help make Markham an even better place to live, work, and play!
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.