Open House New York Weekend 2026

Open House New York Weekend provides free public access to significant buildings and infrastructure across the five boroughs over three days in October. Now in its third decade, the event draws practitioners, students and informed members of the public to buildings that are rarely accessible outside professional or institutional contexts, making it one of the most substantive public architecture events on the North American calendar.

For architects and engineers, the professional value lies in the restricted tours of mechanical plants, heritage restoration sites and recently opened transit infrastructure. These tours are architect and engineer-led, offering technical insight into building systems, structural approaches and the particular challenges of working within New York’s dense and historically layered urban fabric.

OHNY Weekend runs 16 to 18 October 2026 across all five boroughs. Registration for restricted and specialist access tours opens through ohny.org in the weeks ahead of the event; popular tours book out quickly and early registration is recommended.