About this guide

GroundZeroTourNYC.com is an independent visitor guide to Ground Zero in Lower Manhattan: the 9/11 Memorial, the 9/11 Museum, One World Observatory and the guided tours that connect them. We are not the National September 11 Memorial & Museum, One World Observatory, any tour operator, or Viator, and the site name describes the place we write about rather than a business. We compare the bookable tours and tickets so you can plan a visit that fits your time, your budget and your group.

Facts on this site are checked against the Memorial & Museum's and the Observatory's published visitor information and the live Viator listings, including thousands of recent guest reviews. Hours, prices and rules change; when a listing and this page disagree, the official information and the checkout price win.

We write about a place of mourning, and we try to do it with care: no sensational imagery, and clear guidance on what is free so nobody pays for something they do not need.

The site is funded by affiliate commissions: when you book through a Viator link here, we may earn a commission at no extra cost to you. That never changes what we recommend, including pointing out that the Memorial itself is free. Details on the affiliate disclosure page.

Questions or corrections: contact us.