Goat Island and Three Sisters are free to visit.

There is no separate entrance fee for Goat Island or the Three Sisters Islands. They’re part of Niagara Falls State Park, which doesn’t charge admission. No gate, no ticket booth — just walk across the bridge from the mainland.

The only costs at the park are parking (pay lots) and optional attractions like Cave of the Winds or Maid of the Mist. But if you just want to walk around Goat Island and see the Three Sisters, you can do it for free.

Don’t worry about a ticket — just show up and explore.