345 Park Avenue

also 590 Lexington Avenue | East Midtown | built 1969

Open on the map9 entries

The lot about 1940
About 1940. Via 1940s.nyc
The lot about 1985
About 1985. Via 80s.nyc

The city photographed every building for its tax records around 1940 and again in the 1980s. NYC Municipal Archives.

Written with AI from the source each entry cites, then fact-checked.

  1. 1958

    The Hotel Ambassador, open on the block since 1921, is sold to Sheraton and renamed the Sheraton-East

    The Hotel Ambassador opened in 1921 on the Park Avenue block now filled by 345 Park Avenue. In 1958 Sheraton Hotels bought it and renamed it the Sheraton-East. The block, bounded by Park and Lexington Avenues and 51st and 52nd Streets, also held several townhouses and tenement buildings before the office tower rose.

    Source: Wikipedia

  2. 1966

    The Sheraton-East hotel is demolished to clear the site for 345 Park Avenue

    The block held the Hotel Ambassador, which opened in 1921 and was renamed the Sheraton-East after a 1958 sale to Sheraton. In the 1960s Rudin Management bought the neighboring Gladstone Hotel, a nunnery and a restaurant run by Al Schacht, then acquired the Sheraton-East itself in 1965. The hotel was torn down in 1966 to make way for a new office building.

    Source: Wikipedia

  3. 1969

    Richard Roth Jr. completes 345 Park Avenue with a deliberately quiet facade

    Emery Roth & Sons completes the 44-story, 634-foot tower in 1969 for developer Samuel Rudin, with Richard Roth Jr. as lead design partner. He called the site, set among several historic buildings, the hardest design problem he had faced. He chose a light-colored facade meant to blend in rather than compete with its neighbors.

    Source: Wikipedia

  4. 1971

    The sculpture Dinoceras is dedicated on the tower's plaza

    A 12-foot sculpture called Dinoceras, by Robert Cook, is dedicated in 1971 and commissioned by Jack and Lewis Rudin. It stands on the building's 20,690-square-foot public plaza on Park Avenue, which earned developer Samuel Rudin a zoning bonus for providing open space.

    Source: Wikipedia

  5. 1988

    Blackstone signs its first lease at 345 Park Avenue

    The investment firm Blackstone signs its original lease at 345 Park Avenue in 1988, taking just two floors. After expanding in 2018, 2021 and 2024, it occupies about 1.06 million square feet across 28 floors, more than half the tower, making it one of the largest single-building tenants in Midtown.

    Source: Wikipedia

  6. 2010

    The NFL signs a 20-year lease to move its headquarters to 345 Park Avenue

    In 2010 the National Football League agreed to move three blocks north, from 280 Park Avenue to 345 Park Avenue. The 20-year lease covers about 175,000 square feet, mainly on floors 5, 6 and 7 plus roughly 30,000 square feet below grade. Occupancy was planned for the third quarter of 2011, with brokers from Cushman & Wakefield and Jones Lang LaSalle acting for the league and Rudin Management for the landlord.

    Source: commercialobserver.com

  7. 2025

    The tower reopens a week after the shooting, with remote work offered to staff

    The tower reopened on a Monday, a week after the shooting that killed four people, among them NYPD Detective Didarul Islam, who was working a security assignment. The NYPD said the crime scene had been fully processed, which let the owner reopen the building. Blackstone told employees they could work from home, and the NFL commissioner had directed league staff to work remotely through the end of that week.

    Source: cbsnews.com

  8. 2025

    July 28

    A gunman kills four people at 345 Park Avenue

    On July 28, 2025, a 27-year-old gunman fires an AR-style rifle in the lobby and on the 33rd floor of 345 Park Avenue, then kills himself. The dead are NYPD officer Didarul Islam, Blackstone real estate executive Wesley LePatner, Rudin Management employee Julia Hyman and security guard Aland Etienne. Investigators believe he meant to target the National Football League, which has offices in the building.

    Source: Wikipedia

  9. 2026

    A Cyril Lignac dining complex with three restaurants opens in the tower

    In 2024 Rudin announced an amenity complex for the 1969 tower, with a fitness center and a tenant lounge. Cyril Lignac runs a dining complex that opened in the building in 2026, with three restaurants.

    Source: Wikipedia

Further reading

Nearby

All 43 buildings with stories in East Midtown