The Islamic Centre of Oshawa is the first purpose-built mosque built in Oshawa. Reminiscent of the Ottoman Empire, it features ornamental crescent moons in the main prayer hall dome and the dome atop the minaret. Over the years, Muslims and non-Muslims have used the premises for meetings, lectures, studies and community and educational purposes. Shoes must be removed to enter.

Following the Presbyterian tradition, Knox in Waterdown is an important community hub responding to the needs of the parish. The older Georgian hall is used for food service and community gatherings. The Edwardian sanctuary is fitted out with a stage and a full set of musical instruments that are played for Sunday mass, as well as other occasions.

The Lister Block features a two-level, L-shaped interior shopping arcade and distinctive terracotta and brick façade. It is one of Hamilton's first multi-purpose commercial office/retail buildings. Built in 1923, it was restored in 2012. Join architect-led tours both days (every hour from 10:30 a.m. to 2:30 p.m.) and explore a Tourism Hamilton presentation inside.

This innovative concert hall has a virtual acoustic system. It advances research on human interaction and music's impact on health. It is also used to assist Parkinson's patients, improve music listening for the hard of hearing, and enhance creativity in performances. This acclaimed national treasure offers a unique contribution to understanding the power of music. Limited availability. Registration required.

The art deco-inspired bandshell — designated in 2024 — was a gift from R.S. McLaughlin, founder of General Motors Canada, in 1942 to the City of Oshawa. During Doors Open Oshawa, enjoy a performance by the Oshawa Civic Band at 11:30 a.m. The War Memorial and Cenotaph set in Memorial Park celebrates its 100th anniversary this year.

The Ontario Regiment Museum is the official military history museum of Durham Region's own local Canadian Army unit, the Ontario Regiment Royal Canadian Armoured Corps. It is also home to Canada's largest collection of operational, historical military vehicles. Rides in the museum's M548 "Battle Bus" and M113 armoured personnel carriers will be available at an additional cost during Doors Open.

Built in 1914 as a vaudeville and movie theatre, this distinctive beaux-arts building was designed by Stewart & Witton. After 76 years of continuous operation, the theatre closed in August 1990. But, in 2018, it reopened as an independent art-house cinema. Original architectural features — including lavish interiors — have been beautifully restored, and a new neon sign recreates the long-lost original.

The Regent Theatre's façade, built in 1919 for Famous Players theatres, has Georgian architectural lines. One of the town's few remaining examples of this classically inspired style, the building reopened in 2010 as a lecture theatre for Ontario Tech University, as well as for community and cultural events. Still in use for film screenings, the site has been sensitively restored.

The Robert McLaughlin Gallery (RMG) was founded in 1967, expanded in 1987 and designated in 2024. It is the largest public art gallery in Durham Region with a collection of over 4,700 works, focusing on the continuing story of Canadian abstraction. During Doors Open Oshawa, try some hands-on artmaking from 10:30 a.m. to 12:30 p.m.

Stoney Creek’s Fox Theatre opened on October 20, 1952 and ran successfully until 1965, when it closed. In 1979, it was renovated and re-opened as the Royal Canadian Legion Battlefield Branch 622. This clever adaptive reuse has transformed a lovely mid-century modern theatre into a community space used today for a wide variety of functions. Enjoy musical performances both days.

This outdoor, city-owned area, run by the Friends of Second Marsh, connects people with nature through interpretative, educational and stewardship services. It is a coastal wetland that features marshes, meadows and woodlot habitats. Visitors arrive at the adjacent McLaughlin Bay Wildlife Reserve. Discover this incredible natural area that is unknown to most citizens of Oshawa.

Founded in 1826, St. Andrew's has been at the heart of the historical Ancaster Village for almost 200 years. The stone Gothic revival church was completed in 1875; the bell dates from 1835. There were renovations in 1961 and 1990, then again in 2018. The main entrance was redesigned and an elevator was installed.

St. James United is an inclusive 2SLGBTQ+ congregation that has served Waterdown for almost 250 years. In the 1950s, they built a Gothic revival space. Currently under redevelopment, the church will expand to include 44 new rental homes surrounding the retained place of worship. The retained space will be updated to provide new daycare space and improved public outdoor space.

St. John's Anglican Church is a Gothic revival structure in a beautiful park setting. It has a thriving choir and offers many community activities. The original wooden church burned down in 1868, replaced in 1869 by this local stone building, which is noted for its red front doors, central square tower, magnificent stained-glass windows and interior.

As an Anglican church, St. Mark’s served the community for over 100 years before closing in 1989. Now owned by the City of Hamilton, the site has undergone extensive restoration, preserving the heritage character of the building and park, while adding modern services, gardens and accessibility. It now has a new life as a community arts and cultural programming space.

The Bell Tower Place Community Hub and Stoney Creek United Church provide wonderful examples of both Edwardian and brutalist architecture working together side by side. The site has recently been redeveloped for community use and houses a renovated Masonic lodge (a former 1903 chapel) and a private school (Literacy and Mathematics Academy).

This delightful Stoney Creek restaurant is an original Renaissance-revival power station that provided power to the rail lines in the 1890s. It was intricately refurbished with historical tokens from across Canada to become the space you see today. It is a brilliant example of adaptive reuse, preserving its Florentine arches, scalloping and exaggerated keystones — indicative of the Renaissance revival style.

Westdale Village is an example of the early 20th-century Garden City Movement — with small, individually owned homes radiating out from a central business district. It is also the first planned community in Canada. Enjoy this guided tour and learn about the buildings that make this community. Then enjoy some live music on the patios near the village clock.

404 York Road offers visitors an eclectic mix of the arts along with the Lost Aviators Coffee Co. to refuel in between Doors Open stops along your itinerary. The building encompasses Ed Video — a charitable media arts centre — the Artworks Gallery Guelph and Azure Photography. Note: The Artworks Gallery Guelph’s will feature Adam Honsinger and Rain Bone performing original music.

After 153 years in the original town hall (now the Provincial Offences Court), Guelph's new city hall opened in 2009. Designed by Moriyama Teshima Architects, it combines the original firehall and the wall from the Provincial Winter Fair with modern green-building technologies. Step into the courtyard to see the old town bell and the centre-ice marker from the Memorial Gardens.

In 1935, the first Little Theatre opened at Guelph City Hall. In 1993, a fire forced the theatre out of the Salvation Army Hall on Dublin Street. In 1997, it moved into a former welding shop that now features a 288-seat raked auditorium, gracious lobby, rehearsal hall, workshop and dressing rooms.

Steeped in history — and mystery — Guelph’s first Masonic Lodge was established in 1849, occupying space on Wyndham Street for decades. The “new” Guelph Masonic Centre has been home to local Masons and their long-standing traditions since 1914. Nestled between Quebec Street and Chapel Lane, this building had a $1 million renovation in 2000, modernizing it while retaining original limestone walls.

This Agriculture and Agri-Food Canada research centre focuses on food safety and value-added food attributes to help foster a profitable and sustainable agri-food sector in Canada. During Doors Open, observe the many labs and learn from food scientists about research being conducted on food quality, food safety, enhanced health benefits and new areas of research on the horizon.

This building, previously a British Methodist Episcopal Church, was built in 1880 by former Black slaves using limestone quarried from Essex Street. In 2012, the Guelph Black Heritage Society purchased and renovated the site, which is now a cultural, historical and social centre. Experience the mosaic tile Underground Railway quilt that tells the story of Guelph’s Black community.

This Victorian Renaissance revival-style building served as Guelph’s town hall from 1856 to 2009 when the new city hall opened. Designed by William Thomas, it features carved stone, quarry stone quoins and a vermiculated key stone arch around the doors. In 2009, it was adapted as a courthouse, featuring original windows, crown mouldings, arched cells and a performance hall.