First built in 1893 to designs by Napoleon Le Brun & Sons, One Madison Avenue was one of the city’s largest office buildings, spanning the full block between Park and Madison Avenues and East 23rd and East 24th Streets.

With retail spaces that face Madison Square Park, beautiful southern exposures along 23rd Street or premium space on Park Avenue, One Madison is a magnet for foot traffic and superb exposure.

One Madison is a luxury residential condominium tower located on 23rd Street between Broadway and Park Avenue South, at the southern end of Madison Avenue, across from Madison Square Park in the Flatiron District of Manhattan, New York City.

Mar 23, 2022 · One Madison Avenue is expected to debut by the end of 2023 and achieve both WELL and LEED Gold certification. IBM will consolidate its New York City offices and relocate to One Madison Avenue, an office tower expansion currently underway in the Flatiron District.

5,000-square-foot outdoor terrace with spectacular city views, overlooking Madison Square Park, designed by SMI Landscape Architecture. Grab-n-go cafe and bar with culinary offerings provided by Chef Daniel Boulud.

Sep 6, 2024 · Located at the southeast corner of Madison Square Park, the new 270,000 square-foot IBM office spans five floors of One Madison Avenue – owned and managed by SL Green Realty Corp. – and will be home to more than 2,000 New York -area employees.

One Madison Avenue, the 27 story, 1.4-million-square-foot office building located adjacent to Madison Square park, will feature unprecedented retail, wellness and hospitality-focused amenities complete with tenant lounge and rooftop event space.

Sep 1, 2024 · One Madison Avenue, one of New York City’s iconic structures, has undergone a major transformation, marking it as one of the most significant adaptive reuse projects of the 21st century.

Located adjacent to Madison Square Park, One Madison Avenue is set to become the most significant adaptive reuse project of 21st Centruy New York. The new tower will rise from a revitalized mid-century masonry podium to stand alongside …

One Madison Avenue will combine the elegance of the existing 900,000 square foot limestone building with more than 500,000 square feet of new, virtually column free construction in a new tower above.