The XI (pronounced the Eleventh) sits at the heart of Chelsea, a vibrant neighborhood on Manhattan’s West Side that’s home to hundreds of art galleries, shops, restaurants, and more. Nestled between the Hudson River and the High Line, the development’s elegant travertine and glass towers twist upward from their foundation, curving around each other to maximize upper-floor views of the water and lower-floor views of the High Line’s elevated greenway to the west and east, respectively.

Much like the buildings themselves, the interiors of the two towers are designed to both complement and stand in contrast of each other. The westernmost tower (called No. I) offers 149 condominiums, while the eastern tower (No. X) houses 87, perched above Six Senses New York, the global luxury brand’s first hotel in North America. Further differentiating the two, the common spaces and apartments in No. I are adorned with natural materials in an artisanal palette, while No. X features striking design elements like light chevron floors bordered by dark marble.

Together with an art gallery, a sky bridge housing several of the XI’s luxury amenities, and an exclusive, ground-level extension of the High Line, the towers occupy nearly a million square feet—arguably one of the most desirable blocks in New York. The development is billed as both an epicenter and an escape, offering residents their own quiet piece of Manhattan, while serving as a gateway to the best the city has to offer.