The science centre is coming to the water

After two years of limbo, the Ontario Science Centre is finally landing somewhere Torontonians actually pass through. The province is opening a larger interim location at Harbourfront Centre, and it's trading the cramped Sherway Gardens pop-up for a real waterfront footprint with room to breathe. So if you grew up on the Don Mills building and you've spent the interim quietly wondering where all the science went, this is the first version of the interim experience that feels close to the real thing.

Let's be honest about Sherway. It was always a stopgap. It gave the province a way to keep the brand alive inside a mall while the bigger decisions got made, but it was small, and it showed. The Harbourfront move is a whole different scale of ambition, dropped right into one of the busiest culture districts in the city.

What families can expect at Harbourfront

The interim location is built around a customized exhibit hall, not a handful of displays parked in a leased storefront. So you can expect that hands-on, push-the-button, watch-it-react style of programming the Science Centre has always been known for, just sized up for the space Harbourfront can actually offer.

For parents, the headline is KidSpark. The expanded version is built for the youngest visitors, the crowd that treats a science museum as a full-body activity rather than a reading exercise. If your kids are anywhere in the stroller-to-early-grades range, that's the part of the visit made for them.

And beyond the main hall, the interim centre leans into programming that a mall unit could never have supported.

Workshops

Hands-on sessions give kids and families structured time with staff and materials. It's the kind of guided learning that turns a one-off visit into a reason to come back.

Community spaces

Dedicated areas give schools, groups, and neighbourhood programs somewhere to gather, which matters for a venue that wants to be more than a single-loop attraction.

An expanded KidSpark

The early-years zone gets more room and more to climb on, poke at, and build. For the under-eight set, that's really the whole point.

Honestly, setting all of this inside Harbourfront Centre is the smartest part. The waterfront already pulls steady foot traffic for festivals, exhibitions, and lakeside walks, so a Science Centre stop can just fold into a day people were already spending down there. That's a real change from a suburban mall unit you had to drive to on purpose. And if you want more ideas for filling out the day, our arts and culture coverage tracks what else is worth building a weekend around.

How we got here

This whole reopening started with a hard stop. The original Science Centre building in Don Mills closed abruptly in June 2024 after engineers flagged serious structural risks, specifically around the roof. It was sudden. It caught staff and the public off guard, and it turned a beloved institution into a locked building almost overnight.

What followed was a long stretch of uncertainty. The province stood up the Sherway Gardens pop-up as a placeholder, which kept a foot in the door but never came close to replacing what Don Mills offered. For a generation of Toronto kids, the Science Centre was a rite of passage, so watching it shrink to a mall unit genuinely stung. But the Harbourfront interim home is the first real signal that the province is treating the gap seriously rather than just riding out the closure.

The timeline, and the wait

Here's the part families should keep in the back of their minds. The permanent replacement has slipped to 2029. That's a long horizon, and it means the Harbourfront location isn't a quick bridge to a new building that's nearly finished. It's the version of the Science Centre most Toronto kids will grow up with for the next several years.

And that reframes how you should think about the interim centre. It isn't a consolation prize to visit once out of nostalgia. If your family loved the old building, Harbourfront is where that habit gets to continue, at least until the permanent home is ready. The good news? The larger footprint and the expanded programming suggest the province gets that the interim stretch is measured in years, not months, and is building accordingly.

Worth the trip

For a city that's spent two years asking what happened to its Science Centre, the Harbourfront reopening is the most encouraging answer yet. It's bigger than Sherway, it sits in a part of town people actually visit, and it puts the KidSpark and workshop programming that families care about back within reach. Sure, the permanent building is still years out, and that's a fair thing to be impatient about. But the interim centre is a genuine upgrade, not a holding pattern.

So if you're mapping out where to take the kids this fall, the waterfront just got a lot more compelling. Pair it with a lakeside walk and you've got a full day. And if you want more on how the city keeps reinventing its own institutions, our piece on why Toronto is called the Six is a good rabbit hole. The Science Centre isn't back to full strength yet, but for the first time since 2024, it feels like it's heading in the right direction.