| Building Address: | 43 W 23rd St, New York NY 10010 |
| Building Name: | The Castro Building |
| Building Alternate Address: | 43 W 23rd St |
| Zip Code: | 10010 |
| Neighborhood: | Chelsea |
| Borough: | Manhattan |
| Stories: | 8 |
| Year Built: | 1903 |
| Building Class: | B |
| Block & lot: | 00825-0017 |
History of 43 West 23rd Street, Manhattan, NYC
43 West 23rd Street, located in the iconic Flatiron District of Manhattan, is a historic commercial building completed in 1903. The structure stands eight stories tall and was designed by the esteemed architect Henry J. Hardenbergh, known for his work on notable New York City landmarks such as The Dakota, the original Waldorf Astoria Hotel, and the Plaza Hotel.
Originally commissioned by the George C. Flint Furniture Company, a prominent 19th-century furniture maker, the building was purpose-built as a grand showroom extending through the block to West 24th Street. Hardenbergh’s design featured a limestone façade with large showroom windows that allowed abundant natural light, and rich architectural details including Ionic pillars, Corinthian pilasters, arches, and a deeply overhanging metal cornice. Ornate carved cartouches with demonic feline heads adorned the upper portion of the ground floor piers, marking the building’s distinctive style.
The Flint Furniture Company used the building to display a wide variety of fine furniture arranged in room settings, a retail strategy borrowed from its rival, R. J. Horner, whose cast iron store was nearby. The showroom featured styles such as Louis XV, Louis XVI, Chippendale mahogany, and German Renaissance oak, along with specialty bedroom suites in bird’s-eye maple, birch, mahogany, and oak.
Despite setbacks like a major factory fire in 1906 and subsequent business changes, the building at 43 West 23rd Street has remained largely unaltered and is a testament to the late 19th-century retail and architectural history of the Ladies' Mile shopping district. The building’s original Victorian staircase in the lobby and other preserved architectural elements highlight its continued historic character in the rapidly evolving Flatiron area.
Today, after a comprehensive renovation that preserved its character and architectural features, the building serves as a distinguished commercial property hosting world-class tenants, while standing as a significant piece of Manhattan's architectural and commercial heritage.
- Location: Flatiron District (23rd St off 5th Ave)
- Architect: Henry Hardenburgh (Dakota, Plaza Hotel)
- Historic Victorian staircase in lobby
- Dual entrances (23rd St & 24th St)
- Bus line access
- Subway proximity
- 8-story boutique building
- 12,000 SF typical floors
- 12’ unfinished ceiling heights
- Surface & covered parking available
43 W 23rd St, located in Manhattan, NYC, is a notable office building housing several prominent tenants. The current tenants include:
- Spectrum
- Barclays/Rise
- Eataly Headquarters
- Cognism
- OnFrontiers
- Revelio Labs
- Secfi
- Datorama
This building, also known as The Castro Building, is situated in the iconic Flatiron District. It offers a blend of historical architectural elements and modern amenities, making it a desirable location for businesses.
43 W 23rd St, Manhattan, NYC, is home to a Spectrum store, which offers a range of internet services. Spectrum provides fast internet with speeds starting at 100 Mbps and up to 300 Mbps, along with TV and phone bundles. Another major internet provider available in New York, NY, is AT&T U-verse, which offers reliable internet services, though it may not be specifically in this building. RCN is another provider in the area, offering high-speed internet up to 1000 Mbps on fiber-optic networks.
Location and Cross Streets
43 West 23rd Street is located in Manhattan, New York, with the nearest major cross streets including 5th Avenue and Broadway.
Subway Access
The nearby subway stations serving this location include:
- 23rd Street Station (N, R lines) – approximately a 3-minute walk away
- 28th Street Station (N, R lines) – approximately a 6-minute walk away
Other nearby subway lines accessible within short walking distance include the F, W, Q, and PATH trains, as well as subway stations along 6th Avenue and Lexington Avenue.
Bus Service
Multiple bus routes operate near 43 W 23rd St, including but not limited to:
- M1, M2, M23-SBS
- 158, 28, BM2, BM3
- X27, X28, Downtown Local
Bus stops in close proximity include:
- W 23rd St & 5th Ave
- W 23rd St / 5th Ave
- 5th Ave & W 23rd St
- E 23rd St & Broadway
Train and Additional Transit
The area is also served by regional rail lines such as the Harlem Line and Port Jefferson Branch, as well as PATH trains connecting Manhattan to New Jersey.
