Not as a standalone thing.

Not really. There is no dedicated ranger-led tour or audio guide that covers only the Three Sisters Islands. They’re usually lumped into the broader Niagara Falls State Park tours, like the Cave of the Winds or the Niagara Gorge Discovery Center programs.

If you want the geology and history specifically, your best bet is to stop by the visitor center and ask a ranger directly—they’re happy to chat. The islands are small enough to walk yourself, and the informational signs along the pathway do a decent job explaining the formation story (part of the Niagara Escarpment, post-glacial erosion, etc.).

You could also grab the general park audio guide if you want something in your ear, but it’s not going to spend twenty minutes on just those islands. Honestly, the short walk and the signs will get you 90% of what a tour would cover.

Save the money and just walk the islands.