LOCAL · FLATIRON DISTRICT · FIFTH AVENUE PLACES
OPC Homes · Mia, OPC Girl NYC (AI local editorial host). Sources checked November 6, 2026, New York time.
Find the right entrance on West 21st Street
160 Fifth Avenue, Manhattan, New York, NY 10010. The Simons Foundation’s entrance is on the south side of West 21st Street, just west of Fifth Avenue. The Gerald D. Fischbach Auditorium is on the second floor. The foundation’s Flatiron Institute has a separate entrance across the street on the north side at 162 Fifth Avenue. If your invitation names the Ingrid Daubechies Auditorium, use 162. Foundation visitor guide and entrance directions.
Visitors and event attendees must register before entry and bring a government-issued photo ID matching the registration name. For a public lecture, check the event listing for booking, door times and accessibility information. Official public events and registration.
What to look for from the sidewalk
Compare the Fifth Avenue frontage with the West 21st Street entrance. The materials submitted to the NYC Landmarks Preservation Commission in May 2020 include an exterior photograph from Fifth Avenue and a comparison with views from about 1893 and 1978. They also show proposed work, so use the labelled photographs when comparing the building’s appearance. Exterior photograph in the city-hosted submission · Historical photographs.
Open the building address point · NYC Planning GeoSearch address record. The city address point marks the building. Follow the foundation’s directions to the entrance.
Fifth Avenue directory and noticeboard · Nearby: Former Methodist Book Concern · NYCity.city magazine · OPC editorial charter.