Niagara Falls' most famous up-close experience is about to get a lot bigger. Niagara Parks is pouring $25 million of its own revenue into Journey Behind the Falls, the attraction that has taken visitors 125 feet underground since 1889 to stand next to the thundering Horseshoe Falls. The two-phase overhaul will add a new year-round viewing platform and completely rebuild the lower observation deck.

The headline detail for history buffs: a tunnel that has been shut since the Second World War is reopening. Carved in 1903, it will be restored to something close to its original look — raw rock walls and exposed wooden beams — and will lead to a brand-new platform with panoramic views of the entire Niagara Gorge. That first phase opens in summer 2027.

A year later, in summer 2028, the current lower observation deck gets the full treatment: a modern redesign with better accessibility, and a new platform positioned even closer to the base of the Horseshoe Falls than today's version.

The attraction already has serious heritage credentials. The first tunnels date to 1889, the famous Rainbow Platform opened in 1951, and the falls starred alongside Marilyn Monroe in the 1953 film Niagara — the movie credited with helping cement the area's reputation as the honeymoon capital of the world.

The investment is part of a wider push. Niagara Parks says the project fits Ontario's Destination Niagara Strategy, which aims to double annual visitation to the region, boost its economic footprint and draw more private investment. A key theme throughout is seasonality: both new platforms are designed for year-round use, so winter visitors get frozen- gorge drama instead of closed barriers.

For travellers, the takeaway is timing. If you've been to Journey Behind the Falls before, 2027-28 is a reason to go back — the 1903 tunnel alone will be the most atmospheric thing at the falls. And if you've been putting off a winter trip, the new all-season platforms mean you'll no longer be shortchanged on the views.