The Art Gallery of Ontario in Toronto has fixed a date for its biggest expansion in nearly two decades. The museum announced that the Dani Reiss Modern and Contemporary Gallery, a five-storey addition, will open to the public on 25 September 2027. The new wing will display around 400 modern and contemporary works by Indigenous, Canadian and international artists, and increase the museum's exhibition space by roughly 30 percent.

The project carries a price tag of C$100 million, about $73.4 million, and adds 40,000 square feet to the museum, including 13 new galleries. Some of the new rooms will have ceilings 23 feet high, giving the institution space for large-scale contemporary work it has previously struggled to show. The wing overlooks Grange Park in downtown Toronto and connects to the museum's existing Frank Gehry-designed building.

Three architecture firms collaborated on the design: Toronto-based Diamond Schmitt, New York-based Selldorf Architects, and Two Row Architect, based in Ohsweken, Ontario. The project was first made public in April 2022, and construction has been under way since. The museum says the expansion is now fully funded.

Funding began with a lead gift of C$35 million from Dani Reiss, the chairman and chief executive of Canada Goose, after whom the gallery is named. Governments in Ontario and Canada contributed further support, alongside a community of private donors. Stephan Jost, the museum's outgoing director and chief executive, said the wing would show the world how far the gallery's collection has evolved and announce Toronto and Canada's global position in contemporary art.