No restrooms on the Three Sisters Islands.

No. The islands are tiny, rocky, and accessible by footbridges — they’re scenic overlooks, not facilities. The nearest bathrooms are about a five-minute walk away at the Loeb Boathouse or the public restrooms near Bethesda Terrace.

If you’re planning a long stroll through that part of Central Park, hit a restroom first. The islands themselves have nothing but benches and views.